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A car driver travels from the plains to ...

A car driver travels from the plains to a hill station, which are 200 km apart at an average speed of 40 km/h. In the return trip he covers the same distance at an average speed of 20 km/h. The average speed of the car over the entire distance of 400 km is

A

16.56 km/h

B

17.89 km/h

C

26.67 km/h

D

35 km/h

Text Solution

Verified by Experts

The correct Answer is:
C
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DISHA PUBLICATION-TIME, SPEED AND DISTANCE-PRACTICE EXERCISE (Foundation Level)
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  5. In a 800 m race around a stadium having the circumference of 200 m, th...

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  6. Excluding stoppages, the speed of a train is 45 km/h and including sto...

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  7. A wheel of radius 2.1 m of a vehicle makes 75 revolutions in one min...

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  8. A train covers 180 km distance in 4 hours. Another train covers the sa...

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  9. Speed of a speed-boat when moving in the direction parallel to the dir...

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  10. A plane left 30 minutes later than the scheduled time and in order to ...

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  11. Two trains are 2 km apart and their lengths are 200 m and 300 m. They ...

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  12. A train 300 metres long is running at a speed of 90 km/hr. How many se...

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  13. A boat travels upstream from B to A and downstream from A to B in 3 ...

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  14. A motorboat can travel at 10 km/h in still water. It travelled 91km do...

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  15. Two men starting from the same place walk at the rate of 5 km/h and 5....

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  16. Speed of a boat in standing water is 9 km/h and the speed of the strea...

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  17. An aeroplane travels distances 2500 km, 1200km and 500km at the rate o...

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  18. There are 20 poles with a constant distance between each pole. A car t...

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  19. A man walks half of the journey at 4 km/h by cycle does one third of j...

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  20. A train covers 180 km distance in 4 hours. Another train covers the sa...

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