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28 men can do a piece of work in 15 days. How many men are required to complete the same work in 42 days?1. 102. 12 3. 15 4. 20 |
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Answer» Correct Answer - Option 1 : 10 Given: 28 men can do the work in 15 days Formula used: (M1 × D1 × T1)/W1 = (M2 × D2 × T2)/W2 Calculation: We know that, Work is the same W1 =W2 Let M1 be 28 Let D1 be 15 Let M2 be x Let D2 be 42 28 × 15 = x × 42 ⇒ x = (28 × 15)/42 ⇒ x = 10 ∴ Men required to complete the work in 42 days is 10. |
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