SOLUTION: A rectangle 's length is increased by 30% and its width is decreased by 30%. How much does its area change ?

Question 239340: A rectangle 's length is increased by 30% and its width is decreased by 30%. How much does its area change ?
Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!

Let L be the original Length and W be the original Width.
The original rectangle is then
The new rectangle has Length= and a Width=
= =
So the new area is 91% as large as the original (that is it is 9% smaller in area)