Answer : 4 12 days Explanation : Answer: D) 12 days Explanation: 9M 12B ----- 12 days ...........(1)12M 12B ------- 10 days........(2)10M 10B -------?108M 144B = 120M 120B24B = 12M =

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9 men and 12 boys finish a job in 12 days, 12 men and 12 boys finish it in 10 days. 10 men and 10 boys shall finish it in how many days ?