Question

A boat travels 20 km upstream, but returns back in 2 hours less time. If the speed of the stream is 2.5 km/hr, find the total time taken in the journey.

Answer 1

Answer:

The speed downstream is 12 kmph. II. The speed upstream is 4 kmph. III. In a to and fro journey between two points, the average speed of the boat was 6 kmph