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A and B together can do a work in 12 day...

A and B together can do a work in 12 days. A alone can do this in 20 days. If B works half a day then in how many days A and B together can complete the work?

A

10 days

B

20 days

C

11 days

D

15 days

Text Solution

Verified by Experts

The correct Answer is:
D
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