Question

A rectangle is drawn so that the width is 4 feet shorter than the length. The area of the rectangle is 60 square feet. Find the length of the rectangle.

Answer 1

So here I've drawn a rectangle.
The Area of which is \(\Large A=\ell\cdot \color{orangered}{w}\)
But they told us that the width is 4 feet shorter than the length:
\(\Large A=\ell\color{orangered}{(\ell-4)}\)