Asked by sh
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
Answers
Answered by
Steve
a 25% increase is a factor of 5/4
So, you need 4/5 of the width for the area to stay the same
(5/4 l)(4/5 w) = lw
So, what % decrease is 4/5?
So, you need 4/5 of the width for the area to stay the same
(5/4 l)(4/5 w) = lw
So, what % decrease is 4/5?
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