SOLUTION: The length of a rectangle is 9 feet longer than it is wide. If each side is increased 9 feet, then the area is multiplied by 4. What was the size of the original rectangle?

Algebra ->  Rectangles -> SOLUTION: The length of a rectangle is 9 feet longer than it is wide. If each side is increased 9 feet, then the area is multiplied by 4. What was the size of the original rectangle?       Log On


   

Question 1150061: The length of a rectangle is 9 feet longer than it is wide. If each side is increased 9 feet, then the area is multiplied by 4. What was the size of the original rectangle?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Original dimensions x+9 and x
%28x%2B9%29x=A

New dimensions x+18 and x+9
%28x%2B18%29%28x%2B9%29=4A


Together they mean 4x%28x%2B9%29=%28x%2B9%29%28x%2B18%29
and maybe you can continue from here.