Monday

June 27, 2016
Number of results: 144,226

**help!!!!!!!! Physics**

A microbiologist measures the speed of a swimming bacterium. The bacterium covers a distance of 2.16 microns in 5.0 seconds. The biologist wished to compare the speed of the bacteria with other animals, but the speeds of other animals are listed in kilometers per hour. What is...
*September 29, 2013 by Mary*

**Mileage/graph**

I tried this and needed to graph. But, I want to find out what I did incorrect. Suppose that a car rental agency gave you the following choices. Option A: $30 per day plus 40 cents per mile. Option B: flat $50 per day (a) Write equations for cost per day c for options A and B...
*January 23, 2012 by Algebra88*

**Plane Trigometry**

You observe a plane approaching overhead and assume that its speed is 550 miles per hour. The angle of elevation of the plane is 16 degrees at one time and 57 degrees one minute later. Approximate the altitude of the plane.
*February 14, 2013 by Horum*

**10th grade**

Two ships leave a harbor at the same time, traveling on courses that have an angle of 140 degrees between them. If the first ship travels at 26 miles per hour and the second ship travels at 34 miles per hour, how far apart are the two ships after 3 hours?
*November 4, 2010 by Rac*

**Math**

You invent a new system to make excellent racing tires for the Indianapolis 500/ Your tires are good for an average of 105 miles, with a standard deviation of 7.5 miles. What is the probability that one of your tires can go for at least 44 laps? What is the probability that ...
*July 10, 2012 by Lindsey*

**College math**

A planehas 7 hrs. to reach a target and come back to base. it flies out to the target at 480 miles per hr. and returns on the same route at 640 miles per hour. how many miles from the base is the target?
*January 20, 2009 by Kim*

**math**

car rental is 36.00 day, 100 miles free for each day of rental plus .20 per mile for each mile over allowance and i went 450 miles total how much is total for rental car
*July 4, 2015 by julie lockhart*

**algebra**

A rental truck costs $50 plus $0.40 per mile. Write an equation that gives the cost of driving the truck x miles Use the intersection of graphs method to determine the number of miles that the truck is driven if the rental cost is $70.
*February 13, 2016 by Dee*

**physics**

Student throws a baseball at a large gong 79 miles away and hears the sound of gong 2.63333 seconds later. The speed of sound in air is 330 miles per second. What was the average speed of baseball on its way to gong ?
*September 3, 2014 by Megan*

**calculus**

Suppose the function G(t) represents a test grade (out of 100 points) as a function of hours studied. If G(t)=-0.046t^3+0.915t^2+38.005 points, what is (dG/dt)when t=4? Round your answer to the nearest point per hour. a. 50 points per hour b. 3 points per hour c. 5 points per ...
*September 20, 2011 by Roger*

**Math**

Two trains are travelling on parallel tracks both going from station A to station B.Train 1 leaves at 8 am, at 65 miles per hour. Train 2 leaves at 10 am, at 90 miles per hour. At what time will train 2 catch up to train 1?
*July 29, 2014 by Anonymous*

**physics wave**

A) Show that the average rate with which energy is transported along a cord by a mechnical wave of frequency f and amplitude D is: P(average) = 2(pi^2)u v(f^2)(D^2) v is speed of the wave u is the mass per unit length (M/L) B) If the cord is under a tension Ft =100 N and has ...
*May 1, 2008 by Anonymous*

**Algebra II**

A runner completes a 16 mile trip, running 8 miles uphill and 8 miles downhill in a total of 4 hours, if his uphill speed is 3 mph slower than his downhill speed, find his downhill speed.
*November 15, 2012 by John*

**Business **

At an activity level of 8,800 units, Pember Corporation's total variable cost is $146,520 and its total fixed cost is $219,296. For the activity level of 8,900 units, compute the following values. Required: A. The total variable cost B. The total cost C. The average variable ...
*December 29, 2015 by Victoria*

**math**

josh ran for 56 minutes and walked for 16 minutes. What is the ration of the number of minutes ran to the number of minutes walked?
*November 1, 2015 by sam*

**algebra**

I need help.. If the train contained 42 gallons of ice cream at the tempurature of thrity two degrees and the train ran at 12 miles per hour and the train starts from Los Angeles an was making a stop at Phillipines. If the country of Phillipines demand the ice cream came at 12...
*April 3, 2007 by Kristine*

**Math**

The tortoise can walk 3/5 of a mile in 1/2 of an hour. How many miles can he walk in 1 hour?
*November 30, 2015 by Dalton*

**Math**

*not multiple choice* u^-3 = 1/125 y - 1 = 4y - 2/3 * not sure how to do this what is the y intercept of the line? y= -3x - 5 * my answer is 5 when 40 is added to the number miles she ran last week..the result is the same as adding 10 to 4 times the number she ran last week...
*December 17, 2014 by Anonymous*

**math**

Aryan has to travel certain distance from his home at a speed of 5 kilometre hours on his way back to home the speed decreases to 3 kilo metre per hour find his average speed.
*December 21, 2015 by Balram *

**Math**

If a person is charged 1.5 cents per mile,how much will he have to pay after he drives one thousand miles?
*February 18, 2016 by Bruce*

**prealgebra**

change 40 miles per hour to miles per second
*March 5, 2013 by garrett*

**Problem solving **

A rental car agency charges $15 per day plus $.11 per mile to rent a certain car. Another agency charges $18 per day plus 8 cents per mile to rent the same car. If they rent the car for one day how many miles will they have to be driven for the cost of a car from the first ...
*February 17, 2014 by Taylor*

**Problem solving **

A rental car agency charges $15 per day plus $.11 per mile to rent a certain car. Another agency charges $18 per day plus 8 cents per mile to rent the same car. If they rent the car for one day how many miles will they have to be driven for the cost of a car from the first ...
*February 17, 2014 by Taylor*

**algebra**

A car rental agency charges $250 per week plus $0.25 per mile to rent a car. How many miles can you travel in one week for
*February 24, 2013 by kisha*

**Science**

If a truck that has a back ramp on it is going 70 miles an hour down the road, and you are traveling 75 behind it, you would soon reach it. If you were to try to get up onto its ramp, would you: A: Since you are going 75 miles an hour and it is going 70, be able to get up onto...
*March 27, 2008 by Spencer*

**math**

The record for the fastest speed on a bicycle is 133 kilometers per hour. How long would it take a person traveling at this speed to travel 365.75 kilometers? hours and minutes
*January 7, 2015 by gabrielle*

**math**

As part of a 3-day workout plan to prepare for a triathlon, an athlete ran 7 and one eighth718 miles Monday, 11 and one third1113 miles Tuesday, and 14 and one sixth1416 miles Wednesday. How many miles did the athlete run in the...
*October 1, 2015 by mo*

**math**

0.3 divided by 0.06 simplify the expression 2: 4+3 time 3-5 simplify the expression 3: a jogger on a treadmill is jogging at 5 miles per hour. which of the following is the time it will take him to jog 1 mile
*January 24, 2013 by sadrac*

**physics**

ques 1.......a boy walks from his home to his school at an average speed of 10 km per hour and returns to his home at an average speed of 15 km per hour . what is his average speed in km per hour during the entire round trip ? ques 2........a thief running at a speed of 8 km ...
*August 14, 2011 by Anonymous*

**physics**

ques 1.......a boy walks from his home to his school at an average speed of 10 km per hour and returns to his home at an average speed of 15 km per hour . what is his average speed in km per hour during the entire round trip ? ques 2........a thief running at a speed of 8 km ...
*August 14, 2011 by Anonymous*

**physics**

ques 1.......a boy walks from his home to his school at an average speed of 10 km per hour and returns to his home at an average speed of 15 km per hour . what is his average speed in km per hour during the entire round trip ? ques 2........a thief running at a speed of 8 km ...
*August 14, 2011 by Anonymous*

**Business Mathematics**

Taxi fare from an airport to a nearby town is $0.80 per mile driven, plus $2 for tolls. Let y represent the lare and r the miles driven on one trip. write the equation for y in terms of r. Find the fare when the distance driven is 17 miles.
*June 7, 2016 by Bithy*

**Chemistry**

(Help) (Problem) A radio wace travels 186,000 miles per second. How many kilometers will the wave travel in one microsecond? (1 mile= 1.61km) distance= timeinseconds/velocity change the given velocity in miles/hr to m/sec 186kmi/sec *1.6km/mi
*January 23, 2007 by Bryan*

**algebra**

Abigail roller skates with a constant speed of 8 miles per hour. How far can she travel in 1 1/2 hours?
*December 21, 2014 by brea*

**Conrady**

A rental car agency charges $240.00 per week plus $0.25 per mile to rent a car. How many miles can you travel in one week for $435.00?
*November 8, 2015 by Helmi*

**math**

a round trip car ride took 12 hours. the first half of the trip took 7 hours at a rate of 45 miles per hour. what was the average rate of speed on the return trip?
*May 31, 2010 by Sara!*

**MATH!**

a round trip car ride took 12 hours. the first half of the trip took 7 hours at a rate of 45 miles per hour. what was the average rate of speed on the return trip?
*May 31, 2010 by Sara!*

**Math: Algebra II**

You start 50 miles east of Pittsburgh and drive east at a constant speed of 65 miles per hour. (Assume that the road is straight and permits you to do this.) Find a formula for d, your distance from Pittsburgh, as a function of t, the number of hours of travel.
*October 5, 2013 by Lucy Ripply*

**Math: Algebra II**

You start 50 miles east of Pittsburgh and drive east at a constant speed of 65 miles per hour. (Assume that the road is straight and permits you to do this.) Find a formula for d, your distance from Pittsburgh, as a function of t, the number of hours of travel.
*October 5, 2013 by Lucy Ripply*

**algabra**

I take a trip in my car. I want to go 960 miles in one day. The time t, in hours, that it takes to travel 960 miles is given. I will be going 70 or 75 miles an hour so the speed is r. How long will it take me to get to where I am going?
*February 1, 2011 by kathy*

**Math**

How would you solve for these word problems in one variable applications? 1.The maximum speed is allowed on main street is 25 miles per hour. 2. applicants must have at least 5 years of experience. 3 Ten less than a number,x, is greater than 32.
*September 25, 2013 by Hayley*

**math**

a round trip car ride took 12 hours. the first half of the trip took 7 hours at a rate of 4 miles per hour. what was the average rate of speed on the return trip? how do i write this as an equation?
*May 31, 2010 by Sara!*

**algebra**

Can someone PLEASE help me with this problem?? In a study of worker efficiency at Wong Laboratories it was found that the number of components assembled per hour by the average worker t hours after starting work could be modeled by the formula N(t)3t3 23t2 8t. a) Rewrite...
*July 31, 2010 by samuala*

**algebra**

the time it takes you to get to campus varies inveresly as your driving rate. Driving at a rate of 40 miles per hour, it takes 1.5 hours. How ong would the trip take you driving at a rate of 60 miles per hour?
*November 1, 2012 by Maria*

**stats**

Between 11 P.M. and midnight on Thursday night, Mystery Pizza gets an average of 5.7 telephone orders per hour. a) Find the probability that at least 32 minutes will elapse before the next telephone order. b) Find the probability that less than 17 minutes will elapse. c) Find ...
*October 31, 2010 by anonymous*

**Math**

The El Paso Middle School girls' basketball team is going from El Paso to San Antonio for the Texas state championship game. The trip will be 560 miles. Their bus travels at an average of 60 miles per hour. Estimate the distance the bus travels in 2 hours.
*October 28, 2012 by Jason*

**chemistry**

Suppose you run a total of 4.35 miles in 58.75 minutes. If you want to determine your average running speed in units of km/hr, how many significant digits will your final answer have?
*March 4, 2012 by Anonymous*

**physical science**

Brad rides his bike 20 km. He covers the distance in 45 minutes (0.75 hours). What is his speed in kilometers per hour? A.44 km/hr B.15 km/hr C.9.0 km/hr D.27 km/hr
*December 18, 2011 by kelsey*

**statistics**

n order to estimate the difference between the average Miles per Gallon of two different models of cars , samples are taken and the following information is collected. Model A Model B Sample Size 13 14 Sample Mean 35 32 Sample Variance 13 7 a) Find a 95% confidence interval ...
*September 30, 2014 by Anonymous*

**MATH**

THE AVERAGE WIND SPEED INCREASED 19 MILES/H FROM 8 AM TO 12 NOON. THE AVERAGE WIND SPEED DECREASED 5 MI MI/H FROM 12 NOON TO 4 PM. AT 4 PM, THE AVERAGE WIND SPEED WAS AT LEAST 32 MI/H. WHAT IS THE MINIMUM VALUE OF THE AVERAGE WIND SPEED AT 8 AM? NEED TO SOLVE AN INEQUALITY ...
*November 30, 2011 by Justin*

**Math **

A rental car agency charges $15 per day plus $.11 per mile to rent a certain car. Another agency charges $18 per day plus 8 cents per mile to rent the same car. If they rent the car for one day how many miles will they have to be driven for the cost of a car from the first ...
*February 17, 2014 by Taylor*

**Math**

Any began a running program she ran less than 5/6 of a mile what part if a mile could any have run
*March 19, 2014 by Lisa*

**calculus**

2. A spin balancer rotates the wheel of the car at 480 revolutions per min. if the diameter of the wheel is 26 in what road speed is being tested in the miles per hour? Round to the nearest tenth
*April 30, 2012 by Nolan *

**statistics**

A construction zone on Kings Road has a posted speed of 45 kilometers per hour. The speeds of vehicle passing through this construction zone are normally distributed with a mean of 46 kilometers per hour and a standard deviation of 4 kilometers per hour. Find the percentage ...
*May 11, 2012 by Nesa*

**Math**

Need help with setting up an equation for this problem: A boat is sailing due east parellel to the shoreline at a speed of 10 miles per hour.At a given time the bearing to the lighthouse is S 70 degrees E, and 15 minutes later the bearing is S 63 degrees E. The lighthouse is ...
*April 6, 2008 by Sharon*

**math**

A car travels at an average speed of 36 kilometers per hour. Write and solve an equation to predict how many hours if will take travel 432kph. It if continues of this speed.
*June 21, 2011 by jewel padilla*

**Algebra**

A runner starts at the beginning of a cross country course running at a constant rate of 6 miles per hour. Five minutes later a second runner begins at the same point,
*September 29, 2015 by Rbg*

**?????**

How do you convert miles per minute into minutes per miles?? Help me please! invert. 30miles/min convets to 1min/30miles
*February 9, 2007 by kayla*

**Math**

Leonard ran 4 miles more than Sheldon ran. The sum of their distances is 26 miles. How far did Sheldon run? The domain a. Define your variable. b. Write algebraic expressions for the distances each person ran. c. Write an equation that can help you solve the problem. d. Solve ...
*December 8, 2015 by James*

**sCiEnCe**

Can you define speed, motion, constant speed and average speed? And can you get me there formulas? Ex-Distance over speed THANKS MUCH! <333 Can you define speed, motion, constant speed and average speed? And can you get me there formulas? Ex-Distance over speed THANKS MUCH...
*March 4, 2007 by Jonas!*

**Physics**

A 180 pound body is dropped from a helicopter 5 miles (26400 ft.) up - - what maximum speed would the body attain, in miles per hour, before hitting the ground? Disregard gravity, air density, etc. factors, a very rough approximation is all that is needed. Thanks.
*November 20, 2015 by Bill*

**s**

According to science, the fastest speed possible for anything is the speed of light. The speed of light is about 186,000 miles per second. That means that in one minute, light travels 11,160,000 miles. The star nearest Earth is the Sun. It's about 93,000,000 miles from Earth. ...
*June 3, 2013 by pamela *

**math**

Two swimmers competed in a 20 mile race. Person 1 swam at a rate of 4 miles every 25 minutes. Person 2 swam at a rate of 3 miles every 20 minutes, Who won and what was each swimmers time?
*October 27, 2012 by lynn*

**7th Grade Math**

Carlos and maria drove a total of 258 miles in 5 hours. carlos drove the first part of the trip and averaged 50 miles per hour. maria drove the remainder of the trip and averaged 55 miles per hour. for approximately how many hours did maria drive?
*January 4, 2012 by Rebecca*

**Math**

Suppose that a car rental agency gave you the following choices. Option A $30 per day plus 40¢ per mile Option B flat $50 per day (a) Write equations for cost per day c for options A and B. (Use m for distance in miles.) c = $ (option A) c = $ (option B) (b)How would i graph ...
*October 23, 2012 by Ms. Jackie*

**Science**

Really confused on this question. A microbiologist measures the speed of a swimming bacterium. The bacterium covers a distance of 2.16 microns in 5.0 seconds. The biologist wished to compare the speed of the bacteria with other animals, but the speeds of other animals are ...
*September 27, 2013 by Gianna*

**reading**

According to science, the fastest speed possible for anything is the speed of light. The speed of light is about 186,000 miles per second. That means that in one minute, light travels 11,160,000 miles. The star nearest Earth is the Sun. It's about 93,000,000 miles from Earth. ...
*October 19, 2012 by Anonymous*

**math**

A race car driver starts along a 50-mile race course traveling at an average speed of 90 mph. Fifteen minutes later a second driver starts along the same course at an average speed of 120 mph. Will the second car overtake the first car before the drivers reach the end of the ...
*July 28, 2011 by Anonymous*

**math question**

Problem A businessman drives from Washington, D.C. to Boston, a distance of 442 miles, and then makes the return trip. On the way to Boston, he drives 65 miles per hour, taking a 1-hour rest stop during the drive. After finishing his business in Boston, he makes the return ...
*October 6, 2008 by sherri*

**Math**

Amy ran twice as many miles on Tuesday as she ran on Monday. Amy ran 2 mi on Monday. What is the total number of miles that Amy ran on Monday and Tuesday
*February 26, 2016 by Dasha*

**Math Algebra**

A boat takes 1 hour less to go 200 miles downstream than upstream. If the rate of the current is 3 miles per hour, what is the rate of the boat in still water?
*May 8, 2016 by Kara*

**Algebra I**

Use one unit multiplier to write the expression needed to convert 42 meters to centimeters? It also said;Do not carry out the actual multiplication. So do I just write my answer 42m over 1 x 100cm over 1m? Thank You for your help.
*October 29, 2014 by Nancy*

**Reading skills**

According to science, the fastest speed possible for anything is the speed of light. The speed of light is about 186,000 miles per second. That means that in one minute, light travels 11,160,000 miles. The star nearest Earth is the Sun. It's about 93,000,000 miles from Earth. ...
*March 6, 2014 by Tazkiyah*

**math**

a plane flew for 4hrs, 30 miles per hour and an adverge speed of 515 mph how far did it fly?
*September 17, 2014 by lily*

**Word Problems**

If your car gets 18 miles per gallon of gasoline, how many pints of gas will you need to take a 698- mile trip? I no that 1pt = 480ml and 1g= 3840 ml so do I x 18 miles per gallon by the amount of pints in a gallon?
*July 22, 2011 by Rina*

**Math**

Amanda will rent a car for the weekend. She can choose one of two plans. The first plan has an initial fee of $75 and costs an additional $0.40 per mile driven. The second plan has no initial fee but costs $0.60 per mile driven. How many miles would Amanda need to drive for ...
*February 10, 2011 by Ilene*

**algebra 2**

Joe will rent a car for the weekend. He can choose one of two plans. The first plan has no initial fee but costs $0.90 per mile driven. The second plan has an initial fee of $65 and costs an additional $0.40 per mile driven. How many miles would Joe need to drive for the two ...
*October 6, 2015 by John*

**math**

Kevin will rent a car for the weekend. He can choose one of two plans. The first plan has no initial fee but costs $0.90 per mile driven. The second plan has an initial fee of $50 and costs an additional $0.70 per mile driven. How many miles would Kevin need to drive for the ...
*March 28, 2016 by marisol*

**Calculus**

Your Porsche's gas mileage (in miles per gallon) is given as a function M(x) of speed x in miles per hour. It is found that M'(x) = 3,600x−2 − 1/ (3,600x−1 + x)2. Estimate M'(10), M'(60), and M'(90). (Round your answers to seven decimal places.) M'(10) = mpg/...
*September 17, 2013 by Justin*

**Calculus**

Your Porsche's gas mileage (in miles per gallon) is given as a function M(x) of speed x in miles per hour. It is found that M'(x) = 3,600x−2 − 1/ (3,600x−1 + x)2. Estimate M'(10), M'(60), and M'(90). (Round your answers to seven decimal places.) M'(10) = mpg/...
*September 17, 2013 by Justin*

**3rd garde math**

seth bikes 3 miles in 10 minutes and 30 miles in 100 minutes. How many miles does seth bike in 1000 minutes
*March 4, 2015 by Anonymous*

**Algebra**

A car rental company charges $24 per day plus $0.75 per mile driven. a) Let C = total cost; D = number of days and M = number of miles b) Write the equation for the total cost in terms of C, D and M c) Use the equation to determine the total cost for a customer who rented the ...
*December 4, 2012 by Randy*

**pyramids**

a car travels 35 km in the first 20 minutes, 43 km in the second 30 minutes and 19 km in the last 18 minutes of a trip. what is the average speed in Km/mn?
*January 8, 2011 by Eloise*

**saxon 65**

how many minutes is one third of an hour An hour is 60 minutes. What is one third of 60 minutes? I hope this helps. Thanks for asking. 20
*August 28, 2006 by olivia*

**algerbra**

A taxi company charges $2.40 for the first mile and $1.20 per mile for each additional mile. How much would the bill be for a 15 mile trip?
*March 16, 2014 by mark ingram*

**math**

last week Ann ran 27 miles less than Jen. Ann ran 19 miles. How many miles did Jen run?
*March 25, 2012 by rob*

**math**

last week bre ran 28 miles more than heather. bre ran 35 miles. how many miles did heather run?
*March 25, 2012 by rob*

**math**

If you're currently making $6.75 per hour and you're offered a new job that pays $7.47 per hour, how much more would you make per hour at the new job? A.$.28 B.$.72 C.$1.28 D.$1.72
*July 8, 2015 by tina*

**Science**

Two Cars A car leaves San Francisco, traveling east at 65 miles per hour. The driver takes a bathroom break of 15 min every 3 hours. Another car departs New York City at the same time, traveling at 60 miles per hour. This driver takes a bathroom break of only 10 minutes every ...
*June 21, 2007 by Daniell*

**math!!!**

can you please check my work 19mm=? m ?=.19??? .017km=? cm ?=1700? 61500cm/min =? km/h ?=.615? thank youuu! .019 (missed a decimal space) 1700 is correct The last one is a little trickier. First, figure out how many km per minute you are moving: .615 km/minute Since that is ...
*April 21, 2007 by George*

**Mathematics**

Two cars drive from town A to town B at constant speeds. The blue car travels 25 miles per hour and the red car travels 60 miles per hour. The blue car leaves at 9:30 am and the red car leaves at noon. The distance between the two towns is 150 miles. Who will get there first? ...
*May 29, 2015 by Stephanie*

**math**

A boy travels on his bicycle at the rate of 6 miles per hour and his sister on hers at the rate of 5 miles per hour. They start at the same time and place and travel over the same road in the same direction. After traveling for 3 hours, the boy turns back. How far from the ...
*July 17, 2013 by vincent*

**Math**

How long will it take to go three tenth of an mile going 80 miles an hour
*February 23, 2016 by Teresa*

**math**

A rental truck costs $50 plus $0.50 (67) per mile. (a) Write an equation that gives the cost C of driving the truck x miles. (b) Use the intersection-of-graphs method to determine the number of miles that the truck is driven if the rental cost is $80. (c) Solve part (b) ...
*May 22, 2013 by Anonymous*

**math**

A rental truck costs $50 plus $0.50 (67) per mile. (a) Write an equation that gives the cost C of driving the truck x miles. (b) Use the intersection-of-graphs method to determine the number of miles that the truck is driven if the rental cost is $80. (c) Solve part (b) ...
*May 22, 2013 by Anonymous*

**6th grade math**

a dog can run as fast as 39.35 miles per hour.without calculating,would about 12,14,or 16 be a reasonable answer for the number of miles a dog could run at this rate in 0.4 hour?Explain your reasoning.
*September 18, 2011 by Kate*

**help**

In your socks assignment, create 5 scenarios, in which your hourly pay rate and the socks per hour change: the current "child labor" scenario ($0.25 per hour, 4 socks per hour) "GM employees " ($63,6) "Weedheads" ($5,1) "McDonalds employees" ($8,8) "Philippinos" ($3,30) We ...
*July 23, 2011 by cass*

**Math Word Problem**

A metra commuter train leaves Union Station in Chicago at 12 noon. Twp hours later an Amtrak train leaves on the same track, traveling at an average speed that is 50 miles per hour faster than the Metra train. At 3PM the Amtrak train is 10 miles behind the commuter train. How ...
*September 16, 2010 by amy*

**math**

Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers per hour for the first 10 kilometers, and then at 15 kilometers per hour for the rest of the trip, how many minutes more will it take him then if he travels the entire trip at 20 kilometers per hour?
*January 12, 2013 by Larry*

**math**

Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers per hour for the first 10 kilometers, and then at 15 kilometers per hour for the rest of the trip, how many minutes more will it take him then if he travels the entire trip at 20 kilometers per hour?
*January 12, 2013 by Larry*