In a river, a man takes 3 hours in rowing 3 km upstream or 15 km downstream. What is the speed of the current?

Related Mcqs:

A boat goes 6 km in an hour in still water. It takes thrice as much time in covering the same distance against the current. Speed of the current is_______?

A. 2 km/hr B. 3km/hr C. 4km/hr D. 5 km/hr...

If a man rows at the rate of 5 kmph in still water and his rate against the current is 3.5 kmph. then the man’s rate along the current is__________?

A. 4.25 kmph B. 6 kmph C. 6.5 kmph D. 8.5 kmph...

A person can swim in still water at 4 km/h. If the speed of water 2 km/h, how many hours will the man take to swim back against the current for 6km?

A. 3 B. 4 C. 4 (1/2) D. Insufficient data...

The current of a stream at 1 kmph. A motor boat goes 35 km upstream and back to the starting point in 12 hours. The speed of the motor boat in still water is_________?

A. 6 kmph B. 7 kmph C. 8.5 kmph D. 8 kmph...

The speed of a boat in still water is 5 km/hr, it can go 30km upstream and return downstream to the original point in 4 hours 30 min. The speed of the stream is_______?

A. 5km/hr B. 8 km/hr C. 10 km/hr D. 15 km/hr...