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. 0.25 B. 0.10
C. 0.47 D. 0.53

Answer: Option D
Explaination:

 


Discussion

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