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?
1.12
2.14
3.11
4.None of the above
Answer:4