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A,B and C together can finish a task in ...

A,B and C together can finish a task in 7.5 days. C is thrice as productive as A and B alone can do the task in 15 days. In how many days can A and C do the job if B goes on leave?

A

30

B

10

C

20

D

15

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CHAMPION PUBLICATION-2017 TIER-II PAPER(8)-EXERCISE
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