Mathematics
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Medium
Question
8 children and 12 men finish a work in 9 days. If each child takes twice as long as a man, in how many days will 12 men finish the same work?
A
6 days
B
8 days
C
10 days
D
12 days
✓ Official correct answer
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A
6 days
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B
8 days
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C
10 days
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D
12 days
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Explanation
A child does half a man's work, so 8 children ≡ 4 men. Total = 16 man-units for 9 days. For 12 men: (16 × 9)/12 = 12 days.