SOLUTION: three years ago,the difference in ages of two brothers was 2 years. the sum of their present ages will double in 10 years. What is the present age of the elder brother?

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Question 886568: three years ago,the difference in ages of two brothers was 2 years. the sum of their present ages will double in 10 years. What is the present age of the elder brother?
Found 2 solutions by JulietG, MathTherapy:
Answer by JulietG(1812)   (Show Source): You can put this solution on YOUR website!
The difference in their ages will not change. If they were two years apart three years ago, they're still two years apart, and will be for the rest of their lives.
If the sum will double in 10 years, then the difference will increase by 20 (ten years each).
The sum now is therefore 20.
Brother A is 9 and Brother B is 11. (totals 20)
In 10 years, Brother A will be 19 and Brother B will be 21 (totals 40)
Answer by MathTherapy(10551)   (Show Source): You can put this solution on YOUR website!

three years ago,the difference in ages of two brothers was 2 years. the sum of their present ages will double in 10 years. What is the present age of the elder brother?


Elder brother's current age:  years 

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