SOLUTION: In 18 years, John's age will be 3 times his present age. How old is John now?

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Question 946911: In 18 years, John's age will be 3 times his present age. How old is John now?
Answer by Fombitz(32388) About Me  (Show Source):
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In 18 years,
J%2B18=3J
2J=18
J=9
John is nine years old.