SOLUTION: I am 12 years old and my brother is 5 years old. In how many years will I be twice as old as my brother?

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Question 1097748: I am 12 years old and my brother is 5 years old. In how many years will I be twice as old as my brother?
Found 2 solutions by Theo, MathTherapy:
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
let x be the number of years from now.

your equation becomes 20 + x = 2 * (5 + x)

simplify this equation to get 20 + x = 10 + 2x

subtract 10 from both sides of this equation and subtract x from both sides of this equation to get 10 = x.

that's your solution.

in 10 years, you will be twice as old as your brother.

20 + 30 = 30
5 + 10 = 15

30 is two times 15.


Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

I am 12 years old and my brother is 5 years old. In how many years will I be twice as old as my brother?
Correct answer: highlight_green%28matrix%281%2C2%2C+2%2C+years%29%29