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A can do a piece of work in 12 days for ...

A can do a piece of work in 12 days for 6 hours per day, and B can do it in 8 days for 7 hours per day. How long will they take to do the work working together, for 9 hours a day?

A

4 days

B

`5/2` days

C

`9/2` days

D

`7/2` days

Text Solution

Verified by Experts

The correct Answer is:
D
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