Question

Streamer moves with velocity 3 km per hour in and against the direction of river water whose velocity is 2 kilometre per hour calculate the total time for total journey if the boat travels 2 km in the direction of steam and then back to its place

Answer 1

If now the boat moves along with the flow of river it will acquire the velocity of 5 KMPH then the time will be
2/5 = 0.4 hour that's 24 minutes For back to its place then the velocity will be 1 KMPH then the time will be 2 hours So total = 2.4 hours roughly