Aptitude - Time and work - Discussion

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Q.

A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is                         
A. A. 1/4 B. B. 1/10
C. C. 7/15 D. D. 8/15

Answer: Option D
Explaination:

 


Discussion

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