SOLUTION: Can you please give me the solution about this kind of problem: Jeff is 10 years old and his brother is 2 years old. In how many years will Jeff be twice as old as his brother?

Question 930807: Can you please give me the solution about this kind of problem:
Jeff is 10 years old and his brother is 2 years old. In how many years will Jeff be twice as old as his brother?
i need the full solution on how to get he answer to this. Thanks! :)
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Every x years passing, Jeff is 10+x and brother is 2+x.
When x is ?
BETTER SAID: What value for x makes true?

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