Two cars are moving with speed v<sub>1</sub>, v<sub>2</sub> towards a crossing along two roads, …

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…

It takes eight hours for a 600 km journey, if 120 km is done by train and the rest by car. It takes 20 minutes more, if …

A racetrack is in the form of a right triangle. The longer of the legs of track is 2 km more than the shorter of the leg…

A ship, 40 kilometres from the shore, springs a leak which admits $$3\frac{3}{4}$$ tonnes of water in 12 minutes. 60 ton…

Rani goes to school from her house in 30 minutes. Raja takes 45 minutes in covering the same distance. Find the ratio be…

An ant moved for several seconds and covered 3 mm in the first second and 4 mm more in each successive second than its p…

The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 km in 4 hours, then the speed of the f…