A. 7.5 days
B. 6.5 days
C. 5.5 days
D. 4.5 days
A man can do a piece of work in 5 days, but with the help of his son he can do it in 3 days. In what time can the son do it alone?
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Home » Mathematics MCQs » A man can do a piece of work in 5 days, but with the help of his son he can do it in 3 days. In what time can the son do it alone?