Multiple choice

If 8 boys or 12 girls can do a piece of work in 28 days, then in how many days will 4 boys and 8 girls do the same work?

  1. 12

  2. 24

  3. 28

  4. 32
Reveal answer Fill a bubble to check yourself
B Correct answer
AI explanation

Using the work equivalence method, 8 boys equal 12 girls, meaning 1 boy equals 12/8 or 1.5 girls. The team of 4 boys and 8 girls is equivalent to (4 * 1.5) + 8 = 14 girls. The total work is 12 girls * 28 days = 336 girl-days. Dividing the total work by the team size of 14 girls gives 336 / 14 = 24 days.

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