A. 50 km

B. 56 km

C. 70 km

D. 80 km

A boat can travel with a speed of 13km/hr in still water .if the speed of the stream is 4km /hr Find the time taken by the boat to go 68km downstream

If both the pipes are opened, how many hours will be taken to fill the tank?

I. The capacity of the tank is 400 litres. II. The pipe A fills the tank in 4 hours. III. The pipe B fills the tank in 6 hours.

A man can row three-quarters of a kilometer against the stream in 11 ¼ minutes. The speed (in km/hr) of the man in still water is:

A man performs 3/5 of the total journey by rail, 17/20 by bus and the remaining 6.5 km on foot. His total journey is:

In covering a certain distance, the speeds of A and B are in the ratio of 3 : 4. A takes 30 minutes more than B to reach the destination. The time taken by A to reach the destination is: