SOLUTION: if the length of a rectangle is increased by 120%and its width is decreased by 20%,what is the resulting percentage increase or decrease in the area?
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Question 176985: if the length of a rectangle is increased by 120%and its width is decreased by 20%,what is the resulting percentage increase or decrease in the area?
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
if the length of a rectangle is increased by 120%and its width is decreased by 20%,what is the resulting percentage increase or decrease in the area?
.
Let x = width of original rectangle
and y = length of original rectangle
.
"original area" = xy
.
New dimensions:
x-.20x = .80x = width of new rectangle
y+1.20y = 2.20y = length of new rectangle
.
"new area" = (.80x)(2.20y) = 1.76xy
.
Therefore, the percentage increase is 176%
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