DIRECTIONS for the question:Solve the following question and mark the best possible option.
M and N can do a piece of work in 3 days; N and O will together take 4 days; M and O will complete it in 6 days. Who among these will take the least time if put to do the work alone?
A)
M
B)
N
C)
O
D)
Data insufficient
B
M + N = W/3
N + O = W/4
M + O = W/6
Adding, 2 (M + N + O) = W/3 + W/4 + W/6 = 3W/4
=> M + N + O = 3W/8
=> M = W/8, N = 5W/24 and O = W/24
Hence, N will take the least time
