SOLUTION: The sum of ages of john and mark is 29 years.john is 3 years older than mark.how old is john?

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Question 1015513: The sum of ages of john and mark is 29 years.john is 3 years older than mark.how old is john?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
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J=John's age; M=Mark's age=J-3
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J+M=29
J+(J-3)=29
2J=32
J=16
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ANSWER: John is 16 years old.
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CHECK:
M=J-3=16-3=13
Mark is 13 years old.
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J+M=29
16+13=29
29=29
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