Mathematics
Medium
Question
A can lay a railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they did the job in 4 days only. Then, C alone can do the job in_________?
A
4
B
9.6
✓ Official correct answer
C
9
D
10
Community credibility
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A
4
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B
9.6
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C
9
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D
10
No member explanations yet for this option.