MATH!!!!!!!

The river boat paddled upstream at 12km/h, stopped for 2 h of sightseeing, and paddled back at 18km/h. How far upstream did the boat travel if the total time for the trip, including the stop, was 7h?

Please help me, the answer is 36 km but i have no idea how to set it up

  1. πŸ‘ 0
  2. πŸ‘Ž 0
  3. πŸ‘ 39
asked by bert
  1. Let D be the distance travelled. The total time moving was 7 - 2 = 5 hours.

    Realize that time time spent travelling in one direction is D/V, where V is the speed.
    Here is what you know:
    D/12 + D/18 = 5 hours
    Create a common denominator.
    (3D + 2D)/36 = 5
    5D/36 = 5
    D = 36 km

    1. πŸ‘ 0
    2. πŸ‘Ž 0
    posted by drwls

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    Andre left his campsite and paddled to a fishing hole 1.5 km downstream. He timed his trip and found that it took him 9 min, His return trip upstream took him 22.5 min. Determine the speeed at which he paddled and the speed of the

    asked by Timmy on February 22, 2016
  2. algbra

    a paddle boat can move at a speed of 14 km/h in still water. the boat is paddled 16 km downstream in a river in the same time it takes to go 8km upstream. what is the speed of the river?

    asked by Anonymous on October 31, 2014
  3. math

    Jessie paddled her canoe 20 miles upstream, then paddled back. If the speed of the current was 3 mph and the total trip took 7 hours, what was Jessie’s speed?

    asked by Jonah on April 18, 2018
  4. algebra

    Abby Tanenbaum paddled her canoe 10 miles upstream, and then paddled back to her starting point. If the rate of the current was 3 mph,and the entire trip took 3.5 hours, what was Abby's rate (in still water)?

    asked by Jennifer on April 23, 2013
  5. RATE, DISTANCE, TIME

    TIM PADDLED HIS KAYAK 12 KM UPSTREAM AGAINST A 3 KM/H CURRENT AND BACK AGAIN IN 5 HR 20 MINUTES. iN THAT TIME HOW FAR COULD HE HAVE PADDLED IN STILL WATER 12/(v+3) + 12/(v-3) = 5.33 hours Solve for this speed in still water, v.

    asked by CINDY on December 21, 2006
  6. Algebra 2

    Tim paddled his kayak 12km upstream against a 3km/h current and back again in 5h and 20 min. A) what was the speed of his kayak? B) how far could he have gone if there had been no current?

    asked by Dolly on January 15, 2014
  7. math

    Julia paddleboat travels 2km/h in stilll water. The boat is paddled 4km down stream in the same time it takes to go 1km upstream what is the speed of the river. Please help and show all work I suck at story problems haha

    asked by madison on October 29, 2016
  8. math

    It takes Ashley 8 hours to kayak 18 km up river and 18 km back down the river. if the river is flowing at 3 km/h, how fast did she puddle assuming she paddled at a constant speed?

    asked by Anonymous on October 17, 2016
  9. Algebra II

    I've been working on this one and I just can't figure it out. I appreciate all the help: Two miles upstream from his starting point, a canoeist passed a log floating in the river's current. After paddling upstream for one more

    asked by Aaron on October 29, 2008
  10. Algebra

    During the first part of a canoe trip, May paddled 20 km up steam and 20 km back in a total time of 5 hrs. The speed of the river is 3 km/hr. Find May’s speed in still water. Set up the equation first then solve.

    asked by john on November 24, 2015

More Similar Questions