A completes 60% of a task in 15 days and then takes the help of B and C. B is 50% as efficient as A is and C is 50% as efficient as B is. In how many more days will they complete the work?

A completes 60% of a task in 15 days and then takes the help of B and

1.	A completes 60% of a task in 15 days and then takes the help of B and C. B is 50% as efficient as A is and C is 50% as efficient as B is. In how many more days will they complete the work?
A.	40/7 days
B.	41/7 days
C.	40/9 days
D.	41/9 days
E.	None of these
Answer» B. 41/7 days

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A completes 60% of a task in 15 days and then takes the help of B and C. B is 50% as efficient as A is and C is 50% as efficient as B is. In how many more days will they complete the work?

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