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ATQ, Total age of father, mother, and daughter = 26 x 3 = 78 years. Let the age of the daughter be 's' years. So, average age of mother and daughter = 2s years. So, sum of ages of mother and daughter = 2 x 2s = 4s years. So, age of the mother = 4s - s = 3s years. So, age of the father = 3s x (4/3) = 4s years. ATQ: 4s + 3s + s = 78 Or, 8s = 78 So, s = 78 / 8 = 9.75 years. So, age of the father = 4s = 4 x 9.75 = 39 years. Therefore, the father is 39 years old.
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