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Suppose the price of gasoline has come down to seventy-seven dollars and twenty-two cents per barrel. If this is a twenty-two percent reduction from the price per barrel 3 months ago, how much was the gasoline per barrel 3 months ago? Answer one hundred dollars eighty dollars and seventy-three cents ninety-nine dollars ninety-nine dollars and twenty-two cents
100-22 = 78% 0.78P = 77.22 P = 77.22/.78