The present age of a father is 3 times that of his son. After 12 years, the father's age will be twice the son's age. Find the son's present age. (answer in years)
Competition practiceAlgebra
A12
B10
C15
D8
Step-by-Step Solution
Let son = x, father = 3x. Then 3x+12=2(x+12) ⇒ 3x+12=2x+24 ⇒ x=12 years.
Answer: A) 12
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