1.

R is 1.5 times as efficient as that of P, and Q takes half time as compared to that of R. If R and P takes 2 2/5 days to complete half of the work then find the time taken by R and ltbegt Q together to complete the whole work?

Answer»

<P>`2 1/3 days`
`3 1/3 days`
`1 1/3 days`
`2 2/3 days`

Solution :Let the EFFICIENCY of R and P be 3x and 2x unit/ day resectively
Efficiency of Q = 6X units/ day
Total work`= 12/5 xx2 XX 5x = 24x` units
Required time `= (24x)/(9X) = 2 2/3` days


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