SOLUTION: Henry´s dad is 18 years older than him. His dad will be twice as old as Henry after 10 years. What is the present age of Henry?

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Question 1108538: Henry´s dad is 18 years older than him. His dad will be twice as old as Henry after 10 years. What is the present age of Henry?
Found 2 solutions by blake cade _ 69_XD, SimsonNettikadan:
Answer by blake cade _ 69_XD(2) About Me  (Show Source):
You can put this solution on YOUR website!
it would have to be 7 . O_O

Answer by SimsonNettikadan(1) About Me  (Show Source):
You can put this solution on YOUR website!
Henry's age = x
Dad's age = x + 18
After 10 years....
Henry's age = x + 10
Dad's age = x + 18 + 10
(x + 18) + 10 = (x + 10) * 2
x + 28 = 2x + 20
x - 2x = 20 - 28
(-x) = (-8)
x = 8
Henry's present age = x = 8
Dad's present age = x + 18 = 8 + 18 = 26