The area of a rectangular wall of a barn is 240 ft.². It's length is 4 feet longer than twice it's width. Find the length and the width of the wall of the barn

A = l * b

a = 240 ft^2

l = (x * 2) + 4

b = x

240 = (x * 2) + 4 * x

Then I started plugging in random values for x. Eventually I came up with this;

240 = (10 * 2) + 4 * 10

240 = 20 + 4 * 10

240 = 24 * 10

240 = 24

Length = 24 feet

Width = 10 feet