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3 men can do a piece of work in 6 days. 5 women can do the same work in 18 days. If 4 men and 10 women work together, then how long will it take to finish the work ? |
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Answer: Option A Explanation: (3 x 6) men = (5 x 18) women 18 men = 90 women ∴ 1 man = 5 women ∴ 4 men + 10 women = 4 x 5 + 10 = 30 women Given, M1 = 5, M2 = 20, D1 = 18 , W1 = W2 = 1 and D2 = ? According to the formula, M1D1W2 = M2D2W1 ⇒ 5 x 18 x 1 = 30 x D2 x 1 ∴ D2 = 5 x 18/30 = 3 days |
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