Multiple choice

16 men does a work in 16 days 20 women does the same work in 16 days. In how many days will 8 men and 10 women do the same work?

  1. 10 days

  2. 12 days

  3. 18 days

  4. 16 days

  5. 8 days
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

16 men × 16 days = 256 man-days. 20 women × 16 days = 320 woman-days. So 16 man-days = 20 woman-days, or 4 men = 5 women. Work needed = 256 man-days. 8 men + 10 women = 8 men + 8 men = 16 men (since 10 women = 8 men). Days = 256/16 = 16 days.

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