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A motor vehicle travelled the first thir...

A motor vehicle travelled the first third of a distance s at a speed of `V_(1)`=10 kmph,the second third at a speed of `V_(2)`=20 kmph and the last third at a sped of `V_(3)`=60 kmph. Determine the mean speed of the vehicle over the entire distance s.

A

15 kmph

B

12kmph

C

10 kmph

D

18 kmph

Text Solution

Verified by Experts

The correct Answer is:
D
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