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A and B together can do a job in 12 days...

A and B together can do a job in 12 days. B alone can finish it in 28 days. In how many days can A alone finish the work?
(a)21 days
(b)19 days
(c)20 days
(d)none of these

A

21 days

B

19 days

C

20 days

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
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