An aeroplane leaves an airport and flies due north at a speed of 1000 km per hour. At the same time another aeroplane leaves the same airport and flies due west at a speed of 1200 km per hour. How far apart will be the twö planes after `1(1/2)` hours?.

From Borjhar Air Port of Guwahati two aeroplanes took off simultaneously, one towards the east with the speed of 720 km. per hour and the other towards the west with the speed of 880 km. per hour. After how many hours will the two aeroplanes be 4000 km. apart? Solve the problem by forming an equation.

A car travelling due north at 20 km/hr turns west and travels at -the same speed. What is the change in velocity:

The wheels of a car are of diameter 80 cm each. How many complete revolutions does each wheel make in 10 minitues when the car is traveling at the speed of 66 km per hour.

The wheels of a car of diameter 80cm each.How many complete revolutions does each wheel make in 10 minutes when the car is travelling at a speed of 66 km per hour?

Work Problem related to speed, distance and time Places A and B are 70km apart on a highway. A car starts from A and another car start from B at the same time. If they travel in the same direction they meet in seven hours but if they travel towards each other meet in one hour. What are their speed.

The distance between two cars is 456 km. If the two cars approach each other at the speed of 42 km. per hour and 34 km. per hour respectively, find after what time they will meet.

A train travels 360 km at a uniform speed.If she had been 5 km/h more,it would have taken 1 hour less for the same journey.Find the speed of the train.

Form the pair of linear equations in the following problems and find their solutions (if they exist) by any algebraic method:Places A and B are 100km apart on a highway.One car starts from A and another from B at the same time.If the car travel in the direction at different speeds,they meet in 5 hours.If they travel towared each other,they meet in 1 hour .What are the speeds of the two cars?

A loaded truck travels 14 km in 25 mintues. If the speed remains the same, how far can it travel in 5 hours?

A motor boat whose speed in still water 18km/hr takes 1 hour more to go 24km up stream than to returns dowm stream to the same spot.Find Speed of the stream.