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Question
In order to complete a work in 28 days, 60 men are required. How many men will be required if the same work is to be completed in 40 days?
Solution
Let x be number of men required 60 men can do the work in = 28 days
1 man can do the work in = 28 x 60 days
x man can do the work in = `(28xx60)/"x"` day
But `(28xx60)/"x"` = 40 days ......(Given)
∴ x =`(28xx60)/40` =7 × 6 = 42
Required number of men = 42
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