Arvind starts walking at 2 p.m. with the speed of 5 km/hr from P to Q. Gopal goes on cycle at 3 p.m. with 10 km/hr from P to Q. At what time Gopal will cross Arvind ?
Two motor cyclists meet after 2 hours if they drive from 100 km apart in the same direction, but they meet in 1 hour if they drive in the opposite direction. The ratio between the speed of faster motor cyclist and the other one is :
If a man reduces his speed to 2/3, he takes 1 hour more in walking a certain distance. The time (in hours) to cover the distance with his normal speed is :
A can complete a journey in 19 hours. He travels first half of the journey at the rate of 21 km/hr and second half at the rate of 24 km/hr. Find the total journey in km.