Friday

September 4, 2015
Number of results: 131,302

**algebra**

monique ran one mile in 6 minutes.her average speed was how many miles per hour
*February 12, 2014 by Anonymous*

**math**

How many minutes are needed to make a 30 mile trip at an average speed of 20 miles per hour?
*April 2, 2008 by Jas*

**Math**

A car traveled 281 miles in 4 hours 41 minutes. What was the average speed of the car in miles per hour? 4 hours 41 minutes = 4 × 60 + 41 = 281 minutes Average speed S is given by distance/ time. S = 281 miles/281 minutes =1 mile/minute = 60 miles/hour
*April 26, 2012 by Rezu*

**maths**

A motorist travels 120 miles to his destionation at an average speed of 60 miles per hour and returns to the starting point at an average speed of 40 miles per hour.His average speed for the entire trip is 1. 53 miles per hour 2. 52 miles per hour 3. 50 miles per hour 4. 48 ...
*August 13, 2014 by peter*

**math **

A marathon runner ran 26.2 miles in 2 h 30 min. Find these rates: a. miles per hour b. miles per minute c. minutes per mile
*November 10, 2011 by missy*

**algebra**

A jogger ran 6 miles, decreased her speed by 1 mile per hour and than ran another 7 miles. If total jogging time was 2 1/42, find speed for each part of her run.
*December 15, 2011 by ty*

**chem**

The speed of light is \rm 3.00\times 10^8~m/s. How fast is this in miles per hour (\rm miles/h)? Use the conversion 1 \;{\rm mile} = 1610\; {\rm m}.
*September 7, 2011 by jake*

**chem**

The speed of light is 3.00 times 10^8~m/s. How fast is this in miles per hour (miles/h)? Use the conversion 1{mile} = 1610{m}.
*September 7, 2011 by jake*

**conversion**

How much longer, in seconds, is required to drive 1 mile at 40 miles per hour than at 60 miles per hour? 1 hour = 60 minutes 1 minute = 60 seconds
*January 30, 2015 by berba*

**Algebra**

You commute 56 miles one way to work. The trip to work takes 10 minutes longer than the trip home. Your average speed on the trip home is 8 miles per hour faster. What is your average speed on the trip home? I don't understand why it has to be converted to 10/60. Cause it is ...
*September 24, 2007 by JIM*

**math!!!!**

One lap around the track is equal to 1/8 of a mile. A horse ran a distance of 9 laps in 2 minutes and 30 seconds. What was the horse's average speed in miles per minute?
*February 9, 2014 by Lidia*

**chemistry**

The conversion factor relating miles to meters is 1 mile= 1610m The speed of light is 3.00×10^8 m/s. How fast is this in miles per hour (miles/h \rm miles/h)?
*September 8, 2013 by randy*

**Algebra (check answers)**

Could you please check my answers we are using substitution to solve each system of equations. And at the end of every solution you are supposed to have an answer as a coordinate. 1. x=2y x+y=3 Answer (1,2) 2. 2y=3 x-y=10 Answer: (10,10) 3. y=x+7 x+2y= -21 Answer: (-3,-4) 4. ...
*April 27, 2009 by Stacie*

**PSAT - Math**

Hello, I am reviewing my psat and looking at the questions I got wrong. I can't understand how to do this problem. Mike and paul left their houses at the same time for a fitness run to the park. Mike ran at an average speed of 7 miles per hour. Paul ran at an average speed of ...
*December 26, 2009 by Tiger*

**Math**

A goal for elite runners is to complete a mile in 4 minutes. At what speed(in miles per hour) is a runner traveling when he completes a mile in 4 minutes?
*April 1, 2012 by Michelle*

**math**

it takes 35 minutes for mr morrison to drive 25 miles to work. rounded to the nearest mile per hour, what is the speed in miles per hour?
*February 2, 2011 by misty*

**math**

a truck driver traveled at an average speed of 48 miles per hour on a 100-mile trip to pick up a load of freight. On the return trip with the truck fully loaded,the average speed was 40 miles per hour. Find the average speed for the round trip.
*March 7, 2010 by donna*

**Algebra**

A truck driver traveled at an average speed of 58 miles per hour on a 200-mile trip to pick up a load of freight. On the return trip (with the truck fully loaded), the average speed was 37 miles per hour. Find the average speed for the round trip.
*January 19, 2013 by olga*

**College Algebra**

A truck driver traveled at an average speed of 55 miles per hour on a 200-mile trip pick up a load of freight. On the return trip (with the truck fully loaded), the average speed was 40 miles per hour. What was the average speed for the round trip?
*February 3, 2015 by Monica *

**Math**

6. Columbus' ships covered approximately 144 miles a day. How many miles would they have traveled in nine days? What was the average speed per hour? If there were two days when the weather did not permit movement, how many miles a day would they have to travel to make up the ...
*March 31, 2014 by Sue*

**math**

A motorist travels 120 miles to his destination at an average speed of 60 miles per hour and returns at an average speed of 60 miles per hour and returns to the starting point at an average speed of 40 miles per hour. What is his average speed for the entire trip
*July 11, 2015 by Mike*

**college algebra**

a bus driver wants to average at least 40 miles per hour on a 70 mile trip. if the first 35 miles takes the driver 1 hour what should be the lowest average speed for the second 35 miles?
*October 17, 2010 by matt*

**Math Hurry!**

Gabriela traveled by motorcycle at an average speed of 17 miles per hour. Then, she traveled by car at an average speed of 12 miles per hour. In total, she traveled 56 miles for 4 hours. How many miles did Gabriela travel by car? (Round to the nearest mile.)
*October 30, 2012 by Sonja*

**algebra**

A student runs 100 meters in 11 seconds. What is the speed of the student? speed = distance over time; 1 mile = 1609 meters 9.1 miles per hour 16 miles per hour 20.3 miles per hour 24 miles per hour pls help
*September 2, 2015 by oscar*

**MATH**

Bob drove to the store( a distance fo 10.5) miles at ana average speed of 35 mile per hours. On the way home, he got stuck in traffic, and he only averaged 15 miles per hour along the same route. What was his average speed for the round trip ?
*September 20, 2013 by Anonymous*

**College Algebra**

A truck driver traveled at an average speed of 55 miles per hour on a 200 mile trip to pick up a load of freight. On the return trip(with the truck fully loaded), the average speed was 40miles per hour. What was the average speed for the round trip?
*November 19, 2007 by Courtney*

**Math**

Yolanda walked a distance of 3 miles in 90 minutes. If her speed for the first mile was 6 miles per hour, how many minutes did it take her to walk the rest of the distance.
*September 4, 2011 by Nick*

**Math/algebra class**

You live 15 blocks (3/4 of a mile) from RACC. Your car is in for service so you decide to walk to class. Walking at a speed of 4 miles per hour, what is the latest time you can leave your home to be on time for your 10:00 am class in Berks Hall? 1) Estimate whether it will ...
*February 10, 2013 by Urgent! running out of time....*

**math**

Jimmy is traveling at a speed of 135 miles per hour (mph). What is his speed in feet per second? Include units in the calculation to show the unit conversion.
*September 3, 2010 by Sam*

**Algebra**

Week 3 Word Problem You live 15 blocks (3/4 of a mile) from RACC. Your car is in for service so you decide to walk to class. Walking at a speed of 4 miles per hour, what is the latest time you can leave your home to be on time for your 10:00 am class in Berks Hall? 1) Estimate...
*February 10, 2013 by Lisa Lisa*

**Math**

Ms. Peters drove from her home to the park at an average speed of 30 miles per hour and returned home along the same route at an average speed of 40 miles per hour. If her driving time from home to the park was 20 minutes, how many minutes did it take Ms. peters to drive from ...
*February 12, 2015 by Malachi*

**Algebra**

Ben traveled by car at an average speed of 29 miles per hour. Then, he traveled by motorcycle at an average speed of 53 miles per hour. In total, he traveled 333 miles for 9 hours. How many minutes did Ben travel by motorcycle? (Round to the nearest minute.)
*August 13, 2012 by Charlotte*

**algebra**

Monigue and Tasha are traveling on the same highway to family reunion at a park. Monique starts out 225 miles from the park and drives 70 miles per hour. Tasha starts out 200 miles from the park and drives 65 per hour. Write an equation for Monique`s where y is the total ...
*November 18, 2014 by Imaya*

**math**

You drove 2695 miles in 35 hours. (1) What is your average rate of change? (2) Suppose you can drive that distance at a legal 75 mile per hour rate. How long should it take you to complete the trip? (3) Suppose you are driving that distance at an illegal 86.8 miles per hour ...
*September 7, 2010 by melissa*

**Algebra**

On a school field trip, the bus travels 16 miles in 30 minutes. find the speed of the bus in miles per hour. use the equation D = RT, where D is distance, R is rate and T is time. The speed of the bus is _____ miles per hour
*March 31, 2015 by Perri*

**Math- Multi-step word problems**

A plane traveling from Phoenix to Washington, D.C with a tailwind of 20 miles per hour takes 3 hours. The return trip in the same wind, which is now a headwind, takes the same plane 3 hours and 12 minutes. What is the average speed of the plane in calm conditions? 600 miles/...
*October 1, 2014 by Kitty*

**College Mathematics**

You drove 2695 miles in 35 hours. (1) What is your average rate of change? (2) Suppose you can drive that distance at a legal 75 mile per hour rate. How long should it take you to complete the trip? (3) Suppose you are driving that distance at an illegal 86.8 miles per hour ...
*September 7, 2010 by Melissa*

**Math**

6. Columbus' ships covered approximately 144 miles a day. How many miles would they have traveled in nine days? What was the average speed per hour? If there were two days when the weather did not permit movement, how many miles a day would they have to travel to make up the ...
*April 1, 2014 by Anonymous*

**math**

andys average driving speed for a 4-hour trip was 45 miles per hour. during the first 3 hours he drove 40 miles per hour. what was his average speed for the last hour of his trip? The trip length was 4 x 45 = 180 miles. He went 3x40 = 120 the first three hours. How many miles ...
*April 28, 2007 by anonymous*

**statistics**

You have just completed a round trip to New York and back by car. The one way distance traveled is 210 miles. If your average speed traveling to New York was 70 miles per hour and your average speed returning to Baltimore was 50 miles per hour (heavy traffic) what was your ...
*September 14, 2014 by Anonymous*

**statistics**

You have just completed a round trip to New York and back by car. The one way distance traveled is 210 miles. If your average speed traveling to New York was 70 miles per hour and your average speed returning to Baltimore was 50 miles per hour (heavy traffic) what was your ...
*September 14, 2014 by Anonymous*

**Calculus/ Optimization**

A truck driver, on assignment from the owner of the truck is to drive on a 300 mile stretch of highway at a constant speed of v miles per hour. According to road signs, the minimum speed allowed is 55 miles per hour and the speed limit is 70 miles per hour. The cost of gas on ...
*March 24, 2013 by Marto*

**Math/ Calculus Please HELP!!!**

A truck driver, on assignment from the owner of the truck is to drive on a 300 mile stretch of highway at a constant speed of v miles per hour. According to road signs, the minimum speed allowed is 55 miles per hour and the speed limit is 70 miles per hour. The cost of gas on ...
*March 24, 2013 by Chris*

**math**

Mark averaged 60 miles per hour during the 30-mile trip to college. Because of heavy traffic he was able to average only 40 miles per hour during the return trip. What was Mark's average speed for the round trip?
*March 24, 2013 by sam*

**math**

an airplane travels a120 mile in 15 minutes.what is its speed in miles per hour
*July 3, 2012 by verkesia*

**Chemistry**

The speed of light is 3.00x 10^8 m/s . How fast is this in miles per hour (miles/h)? Use the conversion . 1mile =1610m
*August 31, 2011 by Okoye*

**Chemistry**

The speed of light is 3.00x 10^8 . How fast is this in miles per hour (miles/h)? Use the conversion . 1mile =1610m
*August 31, 2011 by Okoye*

**math**

A motorcycle leaves Colorado Springs traveling north at an average speed of 47 miles per hour. One hour later, a car leaves Colorado Springs traveling south at an average speed of 54 miles per hour. How long after the motor cycle leaves will it take until they are 552 miles ...
*May 31, 2011 by elaine*

**Pre-Calc**

a driver averaged 50 miles per hour on the round trip between akron, oh and Columbus, oh, 100 miles away. The average speeds for going and returning were x and y miles per hour, respectively. a. show that y=25x/x-25 b. determine the vertical and horizontal asymptotes of the ...
*January 22, 2014 by Andy G*

**Pre-calc**

a driver averaged 50 miles per hour on the round trip between akron, oh and Columbus, oh, 100 miles away. The average speeds for going and returning were x and y miles per hour, respectively. a. show that y=25x/x-25 b. determine the vertical and horizontal asymptotes of the ...
*January 23, 2014 by Andy G*

**Algebra**

One hour = 3,600 seconds and 1 mile= 5,280 feet. MAke a conjecture about how you could convert a speed of 15 miles per hour to feet per second. Then convert please help answer
*November 19, 2014 by Steph*

**fundamentals of math**

Your car gets 33 miles per gallon, you drive an average speed of 44 miles per hour. How much gas do you use in an hour? 33/44? or 44/33
*June 23, 2010 by Leissa*

**math**

If you swim 2 miles in 40 minutes, what is the unit rate? If you use distance=rate*time, then rate =distance/time So 2mi/40min or simplifying to 1 mi per 20min Can you convert this to mile per hour?
*October 14, 2006 by LIndsey*

**5th math **

Jackie ran 4 Miles in 28.5 minutes Which equation could be used to determine the average number of minutes it took jackie to run Each mile(k)? k-4=28.5 or k+3=28.5 or k/3=28.5 or 4k=28.5 can you tell me which one is the right equation?
*January 26, 2011 by pat*

**Math**

Harry ran for 5 miles. He started at 10:30 and finished at 11:20. What was Harry's average speed in miles per hour?
*January 21, 2015 by Cale*

**algebra**

Rachel allows herself 1 hour to reach a sale appointment 50 mile s away. After she has driven 30 miles, she realizes that she must increase her speed by 15 miles per hour in order to get there on time. What was her speed for the first 30 miles?
*August 16, 2010 by jim*

**algebra**

Andy’s average driving speed for a 4-hour trip was 45 miles per hour. During the first 3 hours he drove 40 miles per hour. What was his average speed for the last hour of his trip?
*April 24, 2013 by jj*

**MATH**

We do not provide the units for your answers. Do no type them in the answer box. Enter the numerical value or calculations only. You drove 2695 miles in 35 hours. (1) What is your average rate of change? (2) Suppose you can drive that distance at a legal 75 mile per hour rate...
*September 9, 2010 by URGENT DUE TODAY*

**Accounting Please help me**

Bethany Link delivers parts for several local auto parts stores. She charges clients $0.75 per mile driven. She has determined that if she drives 2,100 miles in a month, her average operating cost is $0.55 per mile. If Bethany drives 4,200 miles in a month, her average ...
*September 27, 2014 by Vanessa*

**Math I Have no idea PlEASE help me**

Wind can affect the speed of an airplane. Suppose a plane is flying round-trip from New York City to San Francisco.The plane has a cruising speed of 300 miles per hour.The wind is blowing from west to east at 30 miles per hour. When the plane flies into (in the opposite ...
*December 23, 2014 by carina*

**Physics**

A bus started out going 20 miles per hour on the highway. One hour later it drove 40 miles per hour on the freeway. How long did it take to go 140 miles? Is the correct answer 3.5 minutes.
*March 11, 2012 by Anonymous*

**Physics**

A bus started out going 20 miles per hour on the highway. One hour later it drove 40 miles per hour on the freeway. How long did it take to go 140 miles? Is the correct answer 3.5 minutes.
*March 11, 2012 by Anonymous*

**Physics**

A bus started out going 20 miles per hour on the highway. One hour later it drove 40 miles per hour on the freeway. How long did it take to go 140 miles? Is the correct answer 3.5 minutes.
*March 11, 2012 by Anonymous*

**math**

Ms. Kolawaski rides her exercise bike at an average speed of 12 miles per hour. How many minutes does it take her to ride 16 miles?
*October 17, 2013 by zion*

**Accounting 5**

Bethany Link delivers parts for several local auto parts stores. She charges clients $0.75 per mile driven. She has determined that if she drives 2,100 miles in a month, her average operating cost is $0.55 per mile. If Bethany drives 4,200 miles in a month, her average ...
*September 26, 2014 by Vanessa*

**Algebra 1**

Nico drives from school to the store at 25 miles per hour. He drives back to the school (along the same route) at 35 miles per hour, and the returns to the store (via the same route) travelling at 40 miles per hour. Find the average rate for the three trips. Round your answer ...
*October 30, 2010 by JK*

**Math HELP!**

Find the unit rate. Rounf to the nearest tenth, if necassary. 344 miles is 11 hours A. 344 miles/hour B. 3,784 miles/hour C. 0.03 mile/hour D. 31.27 miles/hour Is the answer a?
*November 6, 2014 by Callie*

**math**

Diane plans to drive 30 miles to her interview. If she averages 25 miles per hour, how long will it take her to get there? Answers: (A) 50 minutes (B) 55 minutes (C) 1 hour and 12 minutes (D) 1 hour and 20 minutes
*May 7, 2014 by Lakota*

**Math Help**

Mr Timely drove 19 miles to his office in 1/2 hour. What was his average driving speed in miles per minutes? Express your answer as a common fraction.
*January 23, 2015 by Rella*

**Algebra 1**

A car travels on a highway at an average speed of 65 miles per hour. What was the speed in feet per second? (Remember- 1 mile=5280 feet)
*January 24, 2013 by Dani*

**MATH**

1) A man has 2 pennies, 3 nickels, 1 dime, and 2 quarters. How many different sums of money can he make using one or more of these 8 coins? a) 8 b) 12 c) 47 d) 77 2) A train left Albany for Buffalo, a distance of 290 miles, at 10:10 am. The train was scheduled to reach Buffalo...
*July 23, 2014 by Academy*

**algebra**

Monique and Jackie start at the same spot and run in the same direction around a quarter mile track. Monique runs at a speed of 14mph, Jackie runs at a speed of 16mph . how long will it take for Jackie to laps monique? (Jackie runs 1 more lap than monique?)
*February 18, 2013 by alejandro*

**math**

the el paso middle school girls baxketball 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 speed of 60 miles per hour. estimate the distance the bus travels in 2 hours 2and 3 4...2 and a...
*October 2, 2006 by chemiii*

**Algebra**

You commute 56 miles one way to work. The trip to work takes 10 minutes longer than the trip home. Your average speed on the trip home is 8 miles per hour faster. What is your average speed on the trip home? And please go through the steps and give me an answer.
*September 24, 2007 by JIM*

**Algebra**

You commute 56 miles one way to work. The trip to work takes 10 minutes longer than the trip home. Your average speed on the trip home is 8 miles per hour faster. What is your average speed on the trip home? I got to this point xy=56 (x-8)(y+10)=56 I couldn't get any further ...
*September 24, 2007 by JIM*

**math**

A boat travels down the river in 2.6 hours. The return trip up river takes 3.9 hours. A one way trip down or up river is a distance of 21 miles. If the boat is traveling at maximum speed, what is the boats speed measured in waters with no current? You need to use systems to ...
*December 7, 2012 by Anonymous*

**math**

A boat travels down the river in 2.8 hours. The return trip up river takes 3.8 hours. A one way trip down or up river is a distance of 24 miles. If the boat is traveling at maximum speed, what is the boats speed measured in waters with no current? You need to use systems to ...
*December 9, 2012 by Anonymous*

**math**

Ted, a triathlete, can swim 1.2 miles in 25 minutes, bike 56 miles in 2 hours 25 minutes, and run 13.1 miles in 1 hour 35 minutes. He is training for an Olympic distance triathlon which is 0.9 mile swim, a 24.7 mile bike ride and a 6.2 mile run. If Ted completes each part of ...
*February 6, 2014 by Emma*

**Algebra**

Joe can drive from his house to his office in 40 minutes at an average speed of 40 miles per hour. What average is needed to drive the same distance in half an hour? If necessary, round your answer to the nearest tenth.
*December 5, 2012 by Ann*

**math**

A train ran for 6 minutes and 37 seconds in one mile. Another train travelled 7 minutes and 35 seconds in one mile. How long (minutes/seconds) would it take each train to travel 16 miles?
*December 10, 2014 by Sonia*

**math**

Melba rode her bike 7 / 8 mile in 1/ 4 hour what is the unit rate in miles per hour
*January 20, 2015 by Gracie *

**math**

A woman drove to work at an average speed of 40 miles per hour and returned along the same route at 30 miles per hour. If her total traveling time was 1 hour, what was the total number of miles in the round trip?
*March 19, 2008 by Lisa*

**Chemistry**

How are the two parts of a conversion factor related? Either the numerator or the denominator is one of the units needed for the converstion, then the denominator/numerator is the other unit needed. thanks. whats two conversion factors based on the relationship between hours ...
*January 25, 2007 by Dennis*

**math word problem**

Here's the latest from the UMW math department: Andy drove from Richmond to Boston at an average speed of 50 miles per hour. If it took 5 hours to drive from Richmond to Philadelphia at an average speed of 70 miles per hour and if the whole trip took 13 hours, how far is it ...
*August 25, 2010 by M.A.*

**problem solving**

Suppose your car gets 36 miles per gallon of gasoline, and you are driving 45 miles per hour. Using unit analysis, find the number of hours it takes to use 1 gallon of gas. I got 48 minutes but I'm not sure.
*December 8, 2012 by ben*

**math**

This is an SAT prep question. A woman drove to work at an average speed of 40 miles per hour and returned along the same route at 30 miles per hour. If her total traveling time was 1 hour, what was the total number of miles in the round trip?
*October 26, 2008 by Stella*

**Math**

What is the unit rate? A racing car travels 180 miles in 1.5 hours. 5 i need it as a fraction like: 180mi/1.5 hrs thats not the unit rate i think it is The units here will be miles per hour. (Another valid yet rare answer is hours per mile.)
*January 25, 2007 by kristy*

**Math please help**

Harry ran for 5 miles. He started at 10:30 and finished at 11:20. What was Harry's average speed in miles per hour? I got the answer: 6.25mph But the answer i have to choose from are: 3 4 5 6
*January 21, 2015 by Cale*

**math**

You commute 56 miles one way to work. The trip to work takes 10 minutes longer than the trip home. Your average speed on the trip home is 8 miles per hour faster. What is your average speed on the trip home?
*September 24, 2007 by JIM*

**math**

Maria normally spends a half-hour driving to work. When her average speed is ten miles per hour slower than usual, the trip takes ten minutes longer. How many miles does she drive to work?
*January 12, 2013 by meep*

**Math**

Runner runs 8 miles at 5 miles per hour, then another 2 miles at 7 miles per hour, find average speed.
*February 15, 2011 by Nerd101*

**probability**

WaterPlant is 121 miles from the store. Assuming an average speed of 65 miles per hour, how many hours will it take the truck to drive from the bottling plant to the store? Round to one decimal place. How long is that in minutes? Show all your calculations.
*October 28, 2014 by Angie*

**math**

If one runs at a rate of 4.2 miles per hour. If she ran this rate for 48 minutes. How far did she run?
*March 7, 2012 by myron*

**math**

Carl drove from his house to work at an average speed of 35 miles per hour. The drive took him 25 minutes. If the drive home took him 30 minutes and he used the same route in reverse, what was his average speed going home?
*December 31, 2008 by Jen*

**Math**

Paul drove from his house to work at an average speed of 40 miles per hour. The drive took him 15 minutes. If the drive home took him 20 minutes and he used the same route in reverse, what was his average speed going home?
*July 25, 2011 by Lilia*

**Math**

Dominic drove 324 miles from Salt Lake City,Utah, to Bryce Canyon National Park in 6 hours and 34 minutes. What was his average speed, in miles per hour?
*March 26, 2014 by Tom*

**math**

Erica took 2 days to drive 1,020 miles. On the first day she drove 10 hours at an average spped of 62 mile per hour. on the second day, her average spped was 57 miles per hour. approx. how long did she drive on the 2nd day?
*October 11, 2010 by Tiffany*

**math**

A traveler travels on a highway 80 miles at 55 miles per hour, he then travels back on the same highway at 45 miles per hour. What was his average rate of speed. (Hint: it's not 50 miles per hour) If it's not 50, i'm so confussed!!! Please help!!! (and please show me how you ...
*December 2, 2009 by Ashley*

**Algbra**

It’s the end of the semester, and sisters Sarah and Chelsea are eager to head home for the summer. It’s a long drive, and Sarah’s old car can manage an average speed of only 55 miles per hour, so she leaves early in the morning. An hour later, Chelsea follows her at an average...
*April 24, 2015 by Brian*

**Algebra**

It’s the end of the semester, and sisters Sarah and Chelsea are eager to head home for the summer. It’s a long drive, and Sarah’s old car can manage an average speed of only 55 miles per hour, so she leaves early in the morning. An hour later, Chelsea follows her at an average...
*April 24, 2015 by Brian*