A motor boat goes down the stream 30 km and again returns to the starting point in a total time of 4 hours and 30 minutes. If the speed of the stream is 5 km/hr, then find the speed of the motor boat

A sailor can row a boat 8 km downstream and return back to the starting point in 1 hour 40 minutes. If the speed of the stream is 2 km/hr, find the speed of the boat in still water.

A motor boat, whose speed is 15 km/ hour in still water goes 30 km downstream and comes back in a total of 4 hour and 30 minutes. The speed of the stream is

A boat covers a certain distance downstream in 5 hours but takes 7 hours to return upstream to the starting point. If the speed of the stream is 3 km/h, then find the speed of the boat.

If a boat goes 7 km upstream in 42 minutes and the speed of the stream is 3 kmph, the speed of the boat in still water is :

If the speed of a boat in still water is 8 km/h and the rate of stream is 4 km/h, then find upstream speed of the boat.

A motorboat takes 6 hours to cover 100km downstream and 30km upstream.If the boat goes 75km downstream and returns back to the starting point in 8 hours,find the speed of the boat in still water and the speed of the stream.