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A is thrice as productive as C. Together...

A is thrice as productive as C. Together they can complete a job in 22.5 days. If B joins them after they have worked for 15 days then in how many days can they finish the rest of the job if B alone can do the job in 15 days?

A

6

B

3

C

9

D

2

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CHAMPION PUBLICATION-2017 TIER-II PAPER(9)-EXERCISE
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