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20 workers can complete a project in 25 days. How long would 25 workers take to complete the same project?
A$30$ days
B$22$ days
C$20$ days
D$18$ days
Answer & Solution
Correct answer: C. $20$ days
Man-days constant: 20 × 25 = 500. With 25 workers: 500 / 25 = 20 days.
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