A and B can do a piece of work in 30 and...

A and B can do a piece of work in 30 and 36 days respectively. They began the work together but A leaves after some days and B finished the remaining wrok in 25 days. After how many days did A leave?

10 days

6 days

5 days

11 days

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2014 TIER-II PAPER(19)
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