SOLUTION: the length of a rectangle is increased by 25% . by what percentage should the width be decreased so that the area of the rectangle remains unchanged?

SOLUTION: the length of a rectangle is increased by 25% . by what percentage should the width be decreased so that the area of the rectangle remains unchanged?

Algebra.Com

Question 1028256: the length of a rectangle is increased by 25% . by what percentage should the width be decreased so that the area of the rectangle remains unchanged?
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
A = LW
If L is increased by 25%, it becomes (5/4)L.
To cancel that 5/4, the width must become (4/5)W.
Thus the width must be decreased by 20%.
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