Question

3: a boat travels 20 kms upstream in 6 hrs and 18 kms downstream in 4 hrs.Find the speed of the boat in still water and the speed of the water current?

Answer 1

The relative speed of boat with respect to water against the current= 20/6 km per hour.

The relative speed of boat with respect to water along with water current = 18/4 km per hour.

Which implies x + y = 20/6 and x - y = 18/4

The speed of boat = 47/12 km per hour.

The speed of current = 7/12 km per hour.