Question
How is M related to
L? Answer the questions based on the information given below. Seven persons J, K, L, M, N, O, and P belong to a family, which consists of three generations. No single person in the family is a parent. M and J are siblings. J's wife is only daughter-in-law of P. N's mother is sister-in-law of M. L is father of K. K and N have the same gender as that of O.Solution
A container contains 60 liters of a solution containing 25% alcohol. How many liters of pure alcohol must be added to make the alcohol concentration 40%?
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