Two trains 180 metres and 120 metres in length are running towards each other on parallel tracks, one at the rate 65 km…

A boy rides his bicycle 10 km at an average speed of 12 km/hr and again travels 12 km at an average speed of 10 km//hr. …

In a 100 metres race, Kamal defeats Bimal by 5 seconds. If the speed of Kamal is 18 kmph, then the speed of Bimal is :

A man covered a certain distance at some speed. Had he moved 3 kmph faster, he would have taken 40 minutes less. If he h…

A thief, pursued by a policeman, was 100 m ahead at the start. If the ratio of the speed of the policeman to that of the…

A train travelling at 48 kmph crosses another train, having half of its length and travelling in opposite direction at 4…

The distance between two places R and S is 42 km. Anita starts from R with a uniform speed of 4 km/hr towards S and at t…

A 6 cm long cigarette burns up in 15 minutes if no puff is taken.For every puff, it burns three times as fast during th…