SOLUTION: Bob is one third the age of his father. In 12 years he will be half the age of his father. How old are each now? Must use x as a variable in the equation. There will be an x on bot

Question 798465: Bob is one third the age of his father. In 12 years he will be half the age of his father. How old are each now? Must use x as a variable in the equation. There will be an x on both sides of the = sign.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
If Bob is x years father is 3x
12 years hence
bob = x+12
father = 3x+12
(x+12)=1/2(3x+12)
2(x+12)=3x+12
2x+24=3x+12
3x-2x=24-12
x=12 bob's age
father's age = 36
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