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A car moves a distance of 200 m. It cove...

A car moves a distance of `200 m`. It covers the first-half of the distance at speed `40km//h` and the second-half of distance at speed `v km//h`. The average speed is `48km//h`. Find the value of v.

A

`56` km/h

B

`60` km/h

C

`50` km/h

D

`48` km/h

Text Solution

Verified by Experts

The correct Answer is:
B
`V_(amg)=(2xy)/(x+y)`
`48=(2xx40xxV)/(40+V)impliesV=60` km/h
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