3) 420 meters of fencing is needed to enclose a rectangular field. If one side is 90 meters more than the other, find the dimensions (length and width) of the field.
How to solve: Set up the equation as x+x+x+90+x+90=420 Add up the x’s and the 90’s to get 4x+180=420 Subtract 420-180=240 4x=240 Divide 4 from 240 to get x=60 (That gives you the width) To get the length you just have to do 60+90=150
