The area of the rectangular page is 240 square inches.
The rectangular page has a width of x inches and a length of [tex]\frac{240}{x}[/tex].
The area of printable page is 160 square inches.
The rectangular page has 2 inch margins at the top and 1 inch margins on each side.
Area of a rectangle is given by length × width.
The printable area is (x - 2) × ([tex]\frac{240}{x}[/tex] - 4) = 160 square inches.
This can also be represented as:
160 = (x - 2)([tex]\frac{240 - 4x}{x}[/tex])
