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In January, gasoline cost $. pre gallon. In July, gasoline cost $. per gallon. What is the precent increase?
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The original price of a CD player is $. A discount os $ is given. Find the precent decrease.
. The original cost of a computer is $. If the price is decreased by % what is the sale price?
Help me!
Thanks,
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Answer
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% change = (difference between both prices / original price) *
) Difference = $..
% increase = (. / .) * = . %
) Difference = $
% decrease = ( / ) * = %
) Difference = x.
(x / ) * =
x / = . —> x = $ –> This is the difference.
Sale Price = – = $ (we subtracted because price decreased)