Multiple choice

If 10 people can finish a work in 12 days by working 7 hours per day, then in how many days can 14 people finish the same work by working 6 hours per day?

  1. 12

  2. 10

  3. 15

  4. 16

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Total work = 10 × 12 × 7 = 840 person-hours. With 14 people working 6 hours daily, days needed = 840 / (14 × 6) = 840 / 84 = 10 days. This is inverse proportion - more people with fewer hours/day reduces days.

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