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A man covers a total distance of 100km o...

A man covers a total distance of 100km on bicycle. For the first 2 hours, the speed was 20 km/hr and for the rest of the journey, it came down to 10 km/hr. The average speed will be

A

`12 (1)/(2)` km/hr

B

13 km/hr

C

`15 (1)/(8)` km/hr

D

20 km/hr

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The correct Answer is:
A
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