Question

Sally painted a picture that has an area of 480 square inches. The length of the painting is 1 1/5 as long as it is wide. What are the dimensions of Sally's painting?

Answer 1

so Length * Width = 480 in. sq.
L=1 1/5 or 1.2W
substitute the L for 1.2W
1.2W*W=480 in sq
divide both sides by 1.2
w*w= 400
W²=400
square root of both sides
Width = 20 inches
Length= (1.2width) or (20*1.2)
Length=24 inches