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A boy and his mother together can do a p...

A boy and his mother together can do a piece of work in 24 days while the day, working with his father, can complete it in 18 days. If the mother and father together take 36 days to complete the same work, then find the time in which they can complete the work if all the three work together. Also find the time they would take to complete the job, if they work individually.

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The correct Answer is:
16 days,`(144)/(5)` days, 144 days, 48 days
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