SOLUTION: four years hence a boy will be twice as old as he was 6 years ago.find his present age?

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Question 742262:
four years hence a boy will be twice as old as he was 6 years ago.find his present age?
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
X+4=2(X-6)
X+4=2X-12
X-2X=-12-4
-X=-16
X=16 AGE NOW.
PROOF:
16+4=2(16-6)
20=2*10
20=20