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Mathematics 18 Online
OpenStudy (anonymous):

Which is the best sale? 10% off $100.00 $89.00 15% off $99.00 8% off $95.00 giving a metal

OpenStudy (kaisertheslayer):

its C. 15% off $99.00

OpenStudy (kaisertheslayer):

do u need to know why?

OpenStudy (kaisertheslayer):

its cause if we do the math for each the first one is $90 the second one is obviously $89 the third one is $84.15 the fourth one is $87.4 we can see that the third one is the best deal or the cheapest

OpenStudy (kaisertheslayer):

is that good enough for medal?

OpenStudy (anonymous):

thank you

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