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