A and B together can do a work in 6 days. If A alone can do it in 15 days. In how many days can B alone do it?

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Question:A and B together can do a work in 6 days. If A alone can do it in 15 days. In how many days can B alone do it?

1.10

2.15

3.12

4.16

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  1. A and B together can do a work in 6 days. If A alone can do it in 15 days. In how many days can B alone do it?
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