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20 men can dig 40 holes in 60 days. If so, in how many days can 10 men dig 20 holes?

Question and options

20 men can dig 40 holes in 60 days. If so, in how many days can 10 men dig 20 holes?
  1. 30 days
  2. 45 days
  3. 60 days
  4. 75 days

Answer and explanation

Correct answer: C - 60 days
Rate per man = 4020×60=130\frac{40}{20 \times 60} = \frac{1}{30} hole per day. 10 men dig 13\frac{1}{3} hole per day, so 20 holes take 60 days.

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  • CUSAT CAT Integrated IPR Ph.D.

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