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18 men can complete a piece of work in 63 days. 9 women take 189 days to complete the same piece of work. How many days will 4 men, 9 women and 12 children together take to complete the piece of work if 7 children alone can complete the piece of work in 486 days? `54` b. `63` c. `76` d. `81` e. none of these

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RS AGGARWAL-TIME AND WORK-All Questions
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