A. 2 kms/hour

B. 3 kms/hour

C. 5 kms/hour

D. None of these

A man covered a certain distance at some speed. Had he moved 3 kmph faster, he would have taken 40 minutes less. If he had moved 2 kmph slower, he would have taken 40 minutes more. The distance (in km) is;

If a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. The actual distance travelled by him is:

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: