Multiple choice

Forty men can finish a piece of work in 40 days. Assume that each worker is working with equal efficiency Column A Column B Total time required for the whole work to be completed if 5 men leave after every tenth day. 56 days Compare the two quantities to decide whether

  1. the quantity in Column A is greater

  2. the quantity in Column B is greater

  3. the two quantities are equal

  4. the relationship cannot be determined from the information given
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Days 1-10: 40 men * 10 days = 400 units. Days 11-20: 35 men * 10 days = 350 units. Days 21-30: 30 men * 10 days = 300 units. Days 31-40: 25 men * 10 days = 250 units. Days 41-50: 20 men * 10 days = 200 units. Total units = 1600. Remaining work = 1600 - 1500 = 100. Days 51+: 15 men. 100/15 = 6.66 days. Total time = 50 + 6.66 = 56.66 days. Since 56.66 > 56, Column A is greater.

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