A is twice as fast as B. If B alone can do a piece of work in 30 days, in what time can A and B together complete the work?

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Question:A is twice as fast as B. If B alone can do a piece of work in 30 days, in what time can A and B together complete the work?

1.10

2.12

3.15

4.8

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  1. A is twice as fast as B. If B alone can do a piece of work in 30 days, in what time can A and B together complete the work?
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