My age
Algebra
Level
2
Now I'm twice as old as you were when I was as old as you are now; when you will be as old as I am now, the sum of our years will be 63. How old am I now?
42
28
21
25
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1 solution
х+х+(х-у)=63;
2(у-(х-у))=х;
3х-у=63;
4у=3х'
х=28