In the past, every ten-percentage-point increase in cigarette prices in the country of Coponia has decreased per capita sales of cigarettes by four percent. Coponia is about to raise taxes on cigarettes by 9 cents per pack. The average price of cigarettes in Coponia is and has been for more than a year 90 cents per pack. So the tax hike stands an excellent chance of reducing per capita sales of cigarettes by four percent.
Which of the following is an assumption on which the argument depends?
Tobacco companies are unlikely to reduce their profit per pack of cigarettes to avoid an increase in the cost per pack to consumers in Coponia.
Previous increases in cigarette prices in Coponia have generally been due to increases in taxes on cigarettes.
Any decrease in per capita sales of cigarettes in Coponia will result mainly from an increase in the number of people who quit smoking entirely.
At present, the price of a pack of cigarettes in Coponia includes taxes that amount to less than ten percent of the total selling price.
The number of people in Coponia who smoke cigarettes has remained relatively constant for the past several years.
前提是价格上涨10%,那么销售下降4%。
现在政府要把售价为90cents的烟多收9cents的税(也就是政府要涨10%的税),结论就说你涨10%那么销量就会下降4%
所以这个reasoning暗含的assumption就是:卖烟的公司会把政府涨得税加到价格里去,价格提高了那么销量就下降了。
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