SOLUTION: Mary is n years old. If John is twice as old, what is his age now? What was his age 4 years ago?

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Question 923075: Mary is n years old. If John is twice as old, what is his age now? What was his age 4 years ago?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Mary is n years old. If John is twice as old, what is his age now? What was his age 4 years ago?
mary = n yrs old
John = 2(n) = 2n yrs old
4 years ago John was 2n-4 yrs old
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Cheers,
Stan H.
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