A and B can do a piece of work in 10 days and A alone can do it in 15 days. In how many days can B a….

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A and B can do a piece of work in 10 days and A alone can do it in 15 days. In how many days can B alone do it?

Options :-

1. 5 days
2. 6 days
3. 25 days
4. 30 days

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