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A can do a piece of work in 25 days , wh...

A can do a piece of work in 25 days , which B alone can do in 20 days. A staried the work and was joined by B after 10 days. They work lassted for

A

`12 1/2`

B

`14 2/9`

C

15 days

D

`16 2/3`

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The correct Answer is:
D
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