A can do a job in 18 days and B can do it in 30 days. A and B working together will finish twice the amount of work in ------- days?

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Question:A can do a job in 18 days and B can do it in 30 days. A and B working together will finish twice the amount of work in ------- days?

1.21 ½ days

2.22 ½ days

3.23 ½ days

4.12 ½ days

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  1. A can do a job in 18 days and B can do it in 30 days. A and B working together will finish twice the amount of work in ------- days?
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