SOLUTION: since 1992 the price of a certain shirt has increased from $20 to $80. what is the percent increase in the price of this shirt since 1992? please include explanations!

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Question 630253: since 1992 the price of a certain shirt has increased from $20 to $80. what is the percent increase in the price of this shirt since 1992?
please include explanations!
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Each $20 increase is a 100% increase
There are 3 $20 increases, so the
increase since 1992 is 300%
As an equation:
% increase = +%28%28+80+-+20+%29+%2F+20%29%2A100+=+300+ %