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Mathematics, 05.07.2019 22:00 Val03
Afirst class postage stamp was $0.02 in 1885. the same first class postage stamp in 2006 was $0.39. what is the percent of increase in the cost of a first class postage stamp?
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Afirst class postage stamp was $0.02 in 1885. the same first class postage stamp in 2006 was $0.39....
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