Multiple choice

24 women takes 15 days to complete a work where as 45 children takes 20 days to complete the same work. 20 women and 30 children will take how many days to complete the whole work?

  1. 11.25 days

  2. 15 days

  3. 7.5 days

  4. 12.5 days

  5. None of these

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

24 women × 15 days = 360 woman-days. 45 children × 20 days = 900 child-days. Equating work: 360W = 900C, so 1 child = 0.4 woman. For 20 women + 30 children: 20W + 30(0.4W) = 20W + 12W = 32W. Days needed = 360/32 = 11.25 days. The calculation is correct.