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A man and a boy can do a piece of work i...

A man and a boy can do a piece of work in 24 days. If the man works alone for the last 6 days, it is completed in 26 days. How long would the boy take to do it alone? a. 20 days b. `24\ d a y s` c. `36\ d a y s` d. `72\ d a y s`

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