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Two persons A and B each of mass 60 kg a...

Two persons A and B each of mass 60 kg are carrying loads 15 kg each. If they reach the top of a building of height 10 m in 20s and 40s respectively, the ratio of their efficiencies is

A

`1 : 1`

B

`1 : 2`

C

`2 : 1`

D

`4 : 1`

Text Solution

Verified by Experts

The correct Answer is:
C
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