Abigail made a quilt that has the area of 4,800 sq. inches. the length of the quilt is 1 1/3 times the width of the quilt. what are the dimensions of the quilt

For this case we model the problem as a rectangle.
 The area of the rectangle is given by:
 A = (w) * (l)
 Where,
 w: width
 l: long
 Substituting values we have:
 4800 = (w) * ((1 1/3) * w)
 We rewrite:
 w ^ 2 = 4800 / (1 1/3)
 w ^ 2 = 3600
 w = root (3600)
 w = 60 in
 The long will be then:
 l = (1 1/3) * w
 l = (1 1/3) * (60)
 l = 80 in
 
 the dimensions of the quilt are:
 w = 60 in
 l = 80 in