Question
My father is presently 25 years older than me. The sum
of our ages 5 years ago was 39 years. Find my present age.Solution
Let my present age be x years and my father’s present age be y years. Father is 25 years older than me: y=x+25 Sum of our ages 5 years ago was 39: (x−5)+(y−5)=39 x+y−10=39 x+y=49 
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