Multiple choice

15 men can complete a task in 10 days. In how many days can 20 men complete the same task?

  1. 5.5 days

  2. 7.5 days

  3. 8.5 days

  4. 9.5 days
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is an inverse proportion problem: more men means fewer days. Total work = 15 × 10 = 150 man-days. For 20 men: Days = 150 ÷ 20 = 7.5 days. Options A (5.5), C (8.5), and D (9.5) are incorrect calculations.

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