1. An aeroplane covers a certain distance of 420 Kmph in 6 hours. to cover the same distance in 4 2/3 hours, it Must travel at a speed of 


2. The speed of a car is 90kmph. What is the speed in metres per second. 


3. The speed of a car is 10 m/s. What is the its speed in kmph. 


4. A car covers a distance of 720 km in10 hrs. What is its speed in mps. 


5. A man covers a certain distance by car driving at 30 km/hr and he returns back to the starting point riding on a scooter at 10 km/hr. Find his average speed for the whole journey. 


6. A man is walking at a speed of 6 km per hour. After every km he takes rest for 6 minutes. How much time will he take to cover a distance of 12 km. 


7. A person covers a distance in 6 minutes. If runs at a speed of 12 km per hour on an average. Find the speed at which he must run to reduce the time of journey to 5 minutes. 


8. If B takes 20% less time than A, to cover the same distance. What should be the speed of B, if A works at a rate of 10 km/hr? 


9. A car finishes a journey in 20 hours at the speed of 60 km/hr. If the same distance is to be covered in 10 hours, How much speed does the car gain? 


10. A person has to cover a distance of 6 km in 45 minutes. If he covers onehalf of the distance in twothirds of the total time; to cover the remaining distance in the remaining time, what should be his speed in km/hr? 


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