A salesman travels a distance of 50 km in 2 hours and 30 minutes. How much faster, in kilometers per hour, on an average, must he travel to make such a trip in 5/6 hour less time?

A train covers a distance of 12 km in 10 minutes. If it takes 6 seconds to pass a telegraph post, then the length of the train is

River is running at 3 kmph. It takes a man twice as long to row up as to row down the river. The rate of the main in still water is:

A watch gains 12 seconds every 3 hours, what time will it show at 10 A.M. on Tuesday if the watch is set right at 3 A.M. on Sunday?

The speed of the boat in still water in 12 kmph. It can travel downstream through 45 kms in 3 hrs. In what time would it cover the same distance upstream?

In a 100m race A cover the distance in 36 seconds and B in 45 seconds. In this race A beats B by

The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 kms in 4 hours then the speed of the first train is:

Walking at 2/3 of his usual speed a man is 2 hrs.late. Find his actual travel time

Mary jogs 9 km at a speed of 6 km per hour. At what speed would she need to jog during the next 1.5 hours to have an average of 9 km per hour for the entire jogging session?

The length of the bridge which a train, 130 metres long and travelling at 45 km per hour, can cross in 30 seconds, is