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Determining the piece of work

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Reference no: EM131043709

A, B and C can do a piece of work in 10, 20 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?

A. 12 days

B. 15 days

C. 16 days

D. 8.18 days

Reference no: EM131043709

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