Aptitude - Time and work - Discussion

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Q.

A tyre has punctures. The first puncture alone would have made the tyre flat in 9 minutes and the second alone would have done it in 6 minutes. If air leaks out at a constant rate, how long does it take both the punctures together to make it flat?                         
A. A. 1x1/2 minutes B. B. 3x1/2 minutes
C. C. 3x3/5 minutes D. D. 4x1/4 minutes

Answer: Option C
Explaination:

 


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