To do a certain work, the ratio of the efficiencies of A, B and C is 7 – McqOptions

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1.	To do a certain work, the ratio of the efficiencies of A, B and C is 7 : 5 : 6. Working together, they can complete the same work in 35 days. B and C work together for 21 days. The remaining work will be completed by A alone in:
A.	60 days
B.	57 days
C.	50 days
D.	54 days
Answer» C. 50 days

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