TEST YOURSELF (4) WITH ANSWERS

Test Yourself

1. A train runs at the rate of 45 km an hour. What is its speed in meters per second? (12.5 m/s)

2. A motor car takes 50 seconds to travel 500 meters.  What is the speed in Km per hour? (36km/hr)

3. How many km per hour does a man walk who passes through a street 600 m long in 5 minutes? (36/5 km/hr)

4. Compare the rates of two trains, one travelling at 45 km an hour and other at 10 m a second? (5:4)

5. The wheel of an engine 30/7 meters in circumference makes seven revolutions in 4 seconds. Find the speed of the train in km per hour? (27 km/hr)

6. What is the length of the bridge which a man riding 15 km an hour can cross in 5 minutes? (1250 meters)

7. A man takes 6 hrs 30 min in walking to a certain place and riding back. He would have gained 2 hrs 10 min by riding both ways.  How much long would he take to walk both ways? (8 hrs and 40 min)

8. I walk a certain distance and ride back and take 13/2 hour altogether.  I could walk both ways in 31/4 hours. How long would it take me to ride both ways? (5 hrs 15 min)

9. A thief is spotted by a policeman from a distance of 200 meters. When the policeman starts the chase, the thief also starts running. Assuming the speed of the thief 10 km/hr and that of the policeman 12 km/hr, how far the thief runs before he is overtaken? (1 km)

10. A motor car does a journey in 10 hours, the first half at 21 km per hour and the rest at 24 km /hr. find the distance. (224 km)

11. A man rode out a certain distance by train at the rate of 25 km/hr and walked back at the rate of 4 km/hr. The whole journey took 5 hr 48 minutes. What distance did he ride? (20 km)