Question

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?
A. `2 1/3 days`
B. `3 1/3 days`
C. `1 1/3 days`
D. `2 2/3 days`

Answer 1

Correct Answer - (d)
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