SOLUTION: Peter is twice as old as Mary. Seven years ago the sum of their ages was 31. Find their ages.
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Question 887152: Peter is twice as old as Mary. Seven years ago the sum of their ages was 31. Find their ages.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Peter is twice as old as Mary. Seven years ago the sum of their ages was 31. Find their ages.
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The sum of their ages now is 31 + 7 + 7 = 45
P + M = 45
2M + M = 45
--> 30 and 15
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