Question 857828: In 5 years, i will be twice as old as i was 15 years ago. How old am I now?
Answer by JulietG(1812)   (Show Source):
You can put this solution on YOUR website! X + 5 = 2(x-15)
Distribute
X + 5 = 2x - 30
Subtract x from each side
5 = x - 30
Add 30 to each side
35 = x
.
Let's prove it by putting it back into the equation.
In five years, you will be 40.
Fifteen years ago, you were 20.
Is 40 twice 20? yes. Success!
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