a boy is now one-third as old as his father. After 12 years, he will be half as old as his father.Find their present age.
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Answer:
Let the present age of the boy be x years .
Present age of father = 3x
After 12 years, age of the boy = x+12
After 12 years, his father's age = 3x +12
2(x+12) = 3x + 12
2x + 24 = 3x + 12
x = 12
Present age of boy = 12 years
Present age of his father = 36 years
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