Question
X men can complete the piece of work in 36 days and (X +
30) men can complete the same work in 15 days less than that of days taken by X men. Find the value of X.ÂSolution
According to question, => X × 36 = (X + 30) × 21 => 36X = 21X + 630 => 15X = 630 => X = 42
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