Aptitude - Pipes and Cisterns - Discussion

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Q.

If A can do a work in 10 days, B can do it in 20 days and C in 30 days in how many days will the three together do it?                         
A. 5 days B. 5.45 days
C. 6.4 days D. None

Answer: Option B
Explaination:

 


No exp




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