word problem

posted by .

2. The excursion boat Holiday travels 35km upstream and then back again in 4h 48min. If the speed of the Holiday in still water is 15km/h, what is the speed of the current?

  • word problem -

    speed of current ---- x km/h

    speed against current --- 15-x
    speed with current ----- 15+x

    time against current = 35/(15-x)
    time with current = 35/(15+x)

    so solve
    35/(15-x) + 35/(15+x) = 4.8

    (I suggest multiplying each term by (5+x)(15-x), you will end up with a quadratic equation )

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. UPSTREAM

    THIS EXURSION WITH A BOAT TRAVEL 35KM UPSTREAM AND THEN BACK AGAIN IN 4 H 48 MINUTRE. iF THE SPEED OF THE BOAT I5 K,/H, WHAT IS THE SPEED OF THE CURRENT?
  2. mathematics

    a boat travels 12 km upstream and back in 1 hour and 45 min.if the speed of the current is 3 km/h throughout,find the speed of the boat in still water,giving your answer correct to 3 decimal place. NOTE:(Answer is 14.3 km/h,so can …
  3. Algebra 2

    A boat travels 60 km upstream and back again in 8 hours. If the speed of the boat is 16 km/h, what is the speed of the current?
  4. Algebra 2

    1. During 60mi of city driving, Jenna averaged 15mi/gal. She then drove 140mi on an expressway and averaged 25mi/gal for the entire 200mi. Find the average fuel consumption on the expressway. 2. The excursion boat Holiday travels 35km …
  5. Math

    A boat travels 1 km upstream and 1 km back. The time for the round trip is 4 hours. The speed of the stream is 5 km/hr. What is the speed of the boat in still water?
  6. math

    A boat travels 8km upstream and back in 2 hours. If the current flows at a constant speed of 3km/h, Find the speed of the boat in still water.(when the boat goes upstream, it speed reduces by 3km/h, and when going downstream, its speed …
  7. Math

    in still water, a speed boat travels 5 times faster than the current of the river. If the speed boat can travel 48 miles upstream and then back in 5 hours, find the rate of the current.
  8. MATH

    In still water, a speed boat travels 5 times faster than the current of the river. If the speed boat can travel 48 miles upstream and 10 back in 5 hours, find the rate.
  9. Math

    in still water, a speed boat travels 5 times faster than the current of the river. If the speed boat can travel 48 miles upstream and then back in 5 hours, find the rate of the current.
  10. math

    A boat travels from one port A to port B, travelling 126 km, upstream (against the current) at a uniform speed, and the trip takes 6 hours. ¬†On the way back (downstream), the trip only takes 4.5 hours. Set up and solve a system of …

More Similar Questions