Multiple choice

If 8 men or 16 women can complete a work in 5 days, then in how many days shall 2 men and 6 women complete the same work?

  1. 12 days

  2. 15 days

  3. 8 days

  4. 10 days

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

8 men in 5 days means total work = 8 × 5 = 40 man-days. So 1 man does 1/40 of work per day. 16 women in 5 days means total work = 16 × 5 = 80 woman-days. So 1 woman does 1/80 of work per day. 2 men + 6 women = 2(1/40) + 6(1/80) = 1/20 + 3/40 = 5/40 = 1/8 of work per day. Days needed = 1 / (1/8) = 8 days. Option C is correct.