Multiple choice

10 men can finish painting a wall in 8 days. How many more men will be needed if the painting work is to be finished in 4 days?

  1. 8

  2. 5

  3. 10

  4. 20
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Men×Days = constant (10×8=80 man-days). To finish in 4 days: 80/4=20 men needed. Already have 10 men, so need 10 more men.

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