A monkey climbs a 60 m high pole. In first minute he climbs 6 m and slips down 3 m in the next minute. How much time is …

Two trains start from stations A and B and travel towards each other at a speed of 50 kmph and 60 kmph respectively. A t…

A plane flying north at 500 mph passes over a city at 12 noon. A plane flying east at the same altitude passes over the …

A person wishes to reach his destination 90 km away 3 hours but for the first half of the journey his speed was 20 km/hr…

A person, who can walk down a hill at the rate of $$4\frac{1}{2}$$ km/hr and up the hill at the rate of 3 km/hr. He asce…

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

The length of a train and that of a platform are equal. If with a speed of 90 km/hr the train crosses the platform in on…

If a train with a speed of 60 km/hr. crosses a pole in 30 seconds. The length of the train (in metres) is :