A boats crew rowed find the rate.

Question

A boats crew rowed 33 kilometers downstream, with the current, in 3 hours. The return trip against the current , covered the same distance but took 11 hours. Find the crews rate in still water and the rate of the current.

Answer 1

Let c=current speed and b=boat speed.

The distance=speed×time so 33=3(c+b)=11(c-b).

So, c+b=11 and c-b=3, 2c=14 and c=7kph; b=c-3=11-c=4kph.

Current is 7kph and boat speed is 4kph.