3 men and 4 boys can complete a piece of work in 6 days whereas the same work can be done
by 5 men and 2 boys in 5 days. In how many days a man will complete that work?
(A) 20 days
(B) 25 days
(C) 15 days
(D) 30 days
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option d is correct 30 days are required
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