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A bo walks to his school at a distance o...

A bo walks to his school at a distance of 6 km with constant speed of `2.5 kmh^(-1)` and walks back with a constant speed of `4 kmh^(-1)`. His average speed for round trip expressed in `kmh^(-1)`, is

A

`24//13`

B

`40//13`

C

3

D

`1//2`

Text Solution

Verified by Experts

The correct Answer is:
B
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