5 men and 12 boys finish a piece of work in 4 days, 7 men and 6 boys d – McqOptions

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1.	5 men and 12 boys finish a piece of work in 4 days, 7 men and 6 boys do it in 5 days. The ratio between the efficiencies of a man and boy is?
A.	1:2
B.	2:1
C.	2:3
D.	6:5
Answer» E.

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