A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?

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Question:A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?

1.11 days

2.13 days

3.20 3/17 days

4.None of These

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  1. A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?
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