Two planes move along a circle of circumference 1.2 km with constant speeds. When they move in different directions, the…

A boy stated from his house on bicycle at 10 am at a speed of 12 km per hour. His elder brother started after 1 hr 15 mi…

A bus moving at a speed of 45 km/hr catches a truck 150 metres ahead going in the same direction in 30 seconds. The spee…

In a race of 200 metres, B can give a start of 10 metres to A and C can give a start of 20 metres to B. The start that C…

A train approaches a tunnel AB. Inside the tunnel a cat located at a point i.e. $$\frac{5}{{12}}$$ of the distance AB me…

A train, 110 m long is running at a speed of 60 km/hr. How many seconds does it to cross another train, 170 m long stand…

A student walks from his house at a speed of $$2\frac{1}{2}$$ km per hour and reaches his school 6 minutes late. The nex…

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…