Respuesta :

length= 4x-3
width = x 

P = 2(l+w) 
55= 2(4x-3 +x) 
55 = 2(5x-3) 
27.5 = 5x-3 
27.5+3 = 5x 
30.5/5 = x 
6.1=x 

Width is 6.1 in, length (4 x 6.1 -3) = 21.4