Multiple choice

A contractor could complete a certain piece of work, with a certain number of men, in 9 days. Out of the total men employed, 6 remained absent from the very first day. So, the rest could finish the work in 15 days. How many men were originally employed?

  1. 12

  2. 15

  3. 18

  4. 24
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let original men be M. Work = M * 9. (M-6) * 15 = 9M. 15M - 90 = 9M. 6M = 90, M = 15.

AI explanation

Using the formula M1 multiplied by D1 equals M2 multiplied by D2, let the original number of men be M. This gives 9 multiplied by M equals 15 multiplied by (M minus 6). Solving the equation, 9M equals 15M minus 90, so 6M equals 90, resulting in 15 originally employed men.

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