Aptitude - Time and work - Discussion

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Q.

A can lay 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. 9 1/5 days B. 9 2/5 days
C. 9 3/5 days D. 10

Answer: Option C
Explaination:

 


Discussion

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