Multiple choice

25 men could finish a work in 36 days but when some more men joined the work was finished in (\frac{5}{6})th of the time. Find the number of more men joined.

  1. 12

  2. 10

  3. 5

  4. 8

  5. 4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Original: 25 men × 36 days. New time = (5/6)×36 = 30 days. Work = men × days is constant: 25×36 = M×30, so M = 25×36/30 = 30 men. Additional men = 30 - 25 = 5. The work remains the same, so more men means proportionally fewer days.

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