SOLUTION: ten years ago, a person was half as old as he is now. how old is he now?

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Question 383477: ten years ago, a person was half as old as he is now. how old is he now?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
x = his age now.
x - 10 = x/2;
x/2 = 10;
x = 20, his age now.