SOLUTION: The sum of the ages of Gregory and Zoe is 72 years. 12 years ago, Gregory's age was 2 times Zoe's age. How old is Gregory now?
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Question 1125339: The sum of the ages of Gregory and Zoe is 72 years. 12 years ago, Gregory's age was 2 times Zoe's age. How old is Gregory now?
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!
12 years ago, the sum of their ages was 72-2(12) = 48.
Logical reasoning or a bit of simple algebra then tells us that, since Gregory was at that time twice as old as Zoe, Gregory was 32 and Zoe was 16.
Since that was 12 years ago, their ages now are 44 and 28.
ANSWER: Gregory is now 44
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