Question

The length of a rectangle is three times its width. if the width is diminished by 1 inch and the length is increased by 3 inches, the area of the new rectangle is 72 square inches. find the dimensions of the original rectangle.

Answer 1

let's write width with W and let's draw a rectangle as well :P



so if width would be W the length is three times width ...

now the area of rectangle is:

P=L*W