SOLUTION: The length of a rectangle is increased by 10% and the width is decreased by 10%. What percent of the old area is the new area? Please show work.

Algebra ->  Rectangles -> SOLUTION: The length of a rectangle is increased by 10% and the width is decreased by 10%. What percent of the old area is the new area? Please show work.       Log On


   

Question 471516: The length of a rectangle is increased by 10% and the width is decreased by 10%. What percent of the old area is the new area? Please show work.
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
A=mn
(1.1)m(.9)n=A
new A =.99
The new area is 99% of the old area..