1.

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

Answer»

`1 : 1`
`1 : 2`
`2 : 1`
`4 : 1`

ANSWER :C


Discussion

No Comment Found