Question 1077819: A boy is 6 years older than his sister. In 3 years time he will be twice her age. What are their present ages? Answer by jorel1380(3719) (Show Source):
You can put this solution on YOUR website! Let the sister and brother be s and s+6. Then:
s+6+3=2(s+3)
s+9=2s+6
s=3
The sister is 3; the brother is 9. ☺☺☺☺
