SOLUTION: When my dad was 29 years old, I was just 9 years old. Now his age is twice as old as my age. What is my present age?

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Question 1140521: When my dad was 29 years old, I was just 9 years old. Now his age is twice as old as my age. What is my present age?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Age difference is 20 years.

Dad x+20
Son x
x%2B20=2x
highlight%28x=20%29

Answer by ikleyn(52797) About Me  (Show Source):
You can put this solution on YOUR website!
.

You are 20 years younger than your dad, and he is twice as old as you - hence, you are 20 years old now.