5 men and 2 boys working together can do four times as much work per hour as a man and a boy together. The work done by a man and a boy should be in the ratio
A
1 : 2
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B
2 : 1
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C
1 : 3
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D
4 : 1
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Solution
The correct option is B 2 : 1 Obviously,
(5 M + 2B) = 4(1M + 1B) ∴ M = 2B ∴ Work done by a man and boy are in the ratio 2 : 1.