SOLUTION: David is 3 years older than his brother in 2 years the sum of thier ages will be 19. How old are David and his brother?
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Question 547231: David is 3 years older than his brother in 2 years the sum of thier ages will be 19. How old are David and his brother?
Answer by mathie123(224) (Show Source): You can put this solution on YOUR website!
Let d be the age of David now and b be the age of his brother now.
From the given information we have:
(1)
and
(2)
Substituting (1) into (2)
Using (1) we get that
Therefore David is 9 and his brother is 6.
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