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?

 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?

A). 13 days

B). 24 days

C). 37 days

D). 45 days

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