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If a car covers 2/5th of the total distance with v1 speed and 3/5th distance with v2 then average speed is

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By Expert Faculty of Sri Chaitanya
a
12v1v2
b
v1+v22
c
2v1v2v1+v2
d
5v1v23v1+2v2
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detailed solution

Correct option is D

Average speed = = Total distance travelled  Total time taken =x2x/5v1+3x/5v2=5v1v23v1+2v2

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