SOLUTION: shaun is 9 years older than his younger sister Mary. In 7 years time, he will be twice as old as she is. How old are they now?

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: shaun is 9 years older than his younger sister Mary. In 7 years time, he will be twice as old as she is. How old are they now?      Log On