Answer : 4 12 6/7 days Explanation : Answer: D) 12 6/7 days Explanation: Let

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A can do a piece of work in 30 days. He works at it for 6 days and then B finishes it in 18 days. In what time can A and B together it ?

Answer : 4 12 6/7 days Explanation : Answer: D) 12 6/7 days Explanation: Let