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A car covers four successive 7 km distan...

A car covers four successive 7 km distances at speeds of 10km/hour, 20 km/hour, 30km/hour and 60km/hour respectively. Its average speed over this distance is

A

10km/hr

B

20km/hr

C

30km/hr

D

25km/hr

Text Solution

Verified by Experts

The correct Answer is:
B
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