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Question 150365: Rita was 25 when her first son was born. Today the sum of their ages is 105. How old is Rita and her son? : Rita was 25 when her first son was born. Today the sum of their ages is 105. How old is Rita and her son?
Answer by Edwin McCravy(1810) About Me  (Show Source):
You can put this solution on YOUR website!
Rita was 25 when her first son was born. Today the sum of their ages is 105. How old is Rita and her son? 

Let the son's age today be S

>>...Rita was 25 when her first son was born...<<

This tells us that Rita is 25 years older than her son,
therefore,

Rita's age today is (S+25)

>>...Today the sum of their ages is 105...<<

Rita's age today +  Son's age today = 105

(S+25) + S = 105

Solve that and get S = 40.

So the son is 40 and Rita is 25 years older or 65.

Checking:

40 years ago the son was just born and Rita was 25.

Edwin