Multiple choice

10 men, working 6 hours a day can complete a piece of work in 18 days. How many hours a day must 15 men work to complete the same work in 12 days?

  1. 6 hours

  2. 10 hours

  3. 12 hours

  4. 15 hours
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A Correct answer
Explanation

Using the formula M1*D1*H1 = M2*D2*H2: 10 * 18 * 6 = 15 * 12 * H2. 1080 = 180 * H2. H2 = 1080 / 180 = 6 hours.

AI explanation

Using the formula M1D1H1 = M2D2H2, we substitute the given values: 10 * 18 * 6 = 15 * 12 * H2. This simplifies to 1080 = 180 * H2. Solving for H2 gives 6 hours. The result is 6 hours.

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