I think it’s 11 sorry if I’m incorrect
Convert to a decimal which would be 0.55 (11/20).
Then you want to multiply 0.55 by 100 (which is a whole number, all % is going to come from 100) to convert to a full % -> 0.55*100
Then you will simplify 0.55*100
You answer will be 55%.
To eliminate x, u would multiply second equation by 2
to eliminate y, u would multiply second equation by 3