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A vehicle travels half the distance L wi...

A vehicle travels half the distance L with speed `V_1` and the other half with speed `V_2`, then its average speed is.

A

`(V_1+V_2)/2`

B

`(2V_1+V_2)/(V_1+V_2)`

C

`(2V_1V_2)/(V_1+V_2)`

D

`L((V_1+V_2))/(V_1V_2)`

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