• Login via
  • or
  • New here ?

A boat travels 72 km downstream in 8 hours and 84 km upstream in 12 hours. Find the speed of the boat in still water and the speed of the water current ?

A.9 and 3 kmph
B.6 and 7 kmph
C.7 and 2 kmph
D.8 and 1 kmph
Answer and Feedback
Answer:D
Feedback:Downstream speed = 72km/8hrs = 9 kmph
upstream speed = 84km/12hrs = 7 kmph
speed of boat = avg of downstream and upstream speeds
speed of boat = (9+7)/2kmph = 8 kmph.
current speed = half of the difference of downstream and upstream speeds
currend speed = (9-7)/2kmph = 1 kmph

do you want?

view more test

Share this post

Some other questions you may be interested in.

Loading...