### A car covers its journey at the speed of 80km/hr in 10hours. If the same distance is to be covered in 4 hours, by how much the speed of car will have to increase ?

### two cars A and B are running in the same direction. Car A has already covered a distance of 60kms when car B started running. The cars meet each other in 3 hours after car B started running. What was

### Walking 3/4th of his usual rate, a man is 15min late. Find his usual time in minutes

### A monkey climbs up a greased pole, ascends 20m and slip 4m in alternate minutes. If the pole is 96m high, how many minutes will it take to reach the top?