Problema Solution
The area of a rectangle wall of a barn is 77 square feet. Its length is 4 feet longer than the width. Find the length and width of the wall of the barn.
Answer provided by our tutors
let width be x
so length = x+ 4
x(x+4) = 77
x^2 + 4x -77 =0
(x+11)(x-7)=0
x = 7 feet
length = 11 feet