SOLUTION: Good day!Please help me to answer this.I was told by my teacher to give an equation to this: Five years ago,John's age was half of the age he will be in 8 years.How old is he now?

Question 119606: Good day!Please help me to answer this.I was told by my teacher to give an equation to this:
Five years ago,John's age was half of the age he will be in 8 years.How old is he now?
Thank you! May God bless you!

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Five years ago,John's age was half of the age he will be in 8 years.How old is he now?
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Let John's age NOW be "x" yrs old.
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Five years ago he was "x-5" yrs old
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In 8 years from now he will be "x+8".
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EQUATION:
x-5 = (1/2)(x+8)
Multiply both sides by 2 to get:
2x-10 = x+8
x = 18 (John's age NOW is 18.)
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Cheers,
Stan H.

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