The efficiencies of A, B and C are in the ratio 2 : 5 : 3. Working tog – McqOptions

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1.	The efficiencies of A, B and C are in the ratio 2 : 5 : 3. Working together, they can complete task in 9 days. In how many days will C alone complete 40% of that task?
A.	12
B.	15
C.	14
D.	16
Answer» B. 15

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