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A and B alone can complete work in 9 day...

A and B alone can complete work in 9 days and 18 days respectively. They worked together, however 3 days before the completion of the work A left. In how many days was the work completed ?

A

13 days

B

8 days

C

6 days

D

5 days

Text Solution

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The correct Answer is:
B
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