SOLUTION: In twelve years, john will be twice as old as he was eight years ago. How old is John now?

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Question 857790: In twelve years, john will be twice as old as he was eight years ago. How old is John now?
Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
J + 12 = 2(J-8)
Distribute
J + 12 = 2J - 16
Subtract J from each side
12 = J - 16
Add 16 to each side
28 = J
.
Let's make sure it's correct
In twelve years, John will be 40. Is that twice as much as 28-8?
Yes, success!