Let the length be x and the width be x - 3
Perimeter = 2(length + width) = 2(x + x - 3) = 54
2x + 2(x - 3) = 54
I think its 55 because 11 divided by .2 (20%) equals 55 then if you wanna check it then multiply 55 with .2 and you'd get 11.
Answer:
6.3 x 10^-1 is the solution
