SOLUTION: pat is 6 years older than his friend Gary. Four years ago Gary's age was 7 more than half of Pat's age. What are their present age?

Question 422337: pat is 6 years older than his friend Gary. Four years ago Gary's age was 7 more than half of Pat's age. What are their present age?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
pat is 6 years older than his friend Gary. Four years ago Gary's age was 7 more than half of Pat's age. What are their present age?
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Equations:
p = g+6
(g-4)= (1/2)p + 7
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Substitute for "p" and solve for "g":
g-4 = (1/2)(g+6)+7
2g-8 = g+13
g = 21 (Gary's age now)
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Solve for "p":
p = 21+6
p = 27 (Pat's age now)
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Cheers,
Stan H.
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