Question

A man on a boat goes 10 km upstream and comes back to the starting point in the same path in 55 minutes. If the speed of the stream is 2 kmph, then the speed of the boat in still water is:

• A. 25 kmph
• B. 27 kmph
• C. 22 kmph
• D. 30 kmph

Hint:

Total Time = $\frac{D}{v-s} + \frac{D}{v+s}$.

Answer 1

The Correct Option is C