SOLUTION: Mary is 5 years older than Bob. Three years ago the sum of their ages was 17. How old is each now?
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Question 176210: Mary is 5 years older than Bob. Three years ago the sum of their ages was 17. How old is each now?
Answer by EMStelley(208) (Show Source): You can put this solution on YOUR website!
Call Bob's age b. Then Mary is b+5 years old. Three years ago, Bob was b-3 years old and Mary was (b+5)-3 years old. So we can write the equation
So Bob is 9 and Mary is 14.
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