2. 外语
  3. This question refers to the graph above. In the question all references to gasoline prices and taxes refer to average prices, in

This question refers to the graph above. In the question all references to gasoline prices and taxes refer to average prices, in

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问题
This question refers to the graph above. In the question all references to gasoline prices and taxes refer to average prices, including tax, and average taxes, in United States dollars, On June 1, 1989. If the tax per gallon of gasoline in Canada were doubled and the increase in tax added to the price per gallon of gasoline, what percent of the resulting price per gallon would the tax then be?
选项 A、36%.
B、50%.
C、64%.
D、75%.
E、90%.
答案C
解析 若加拿大每加仑汽油的税款加倍，那么税款的增长与每加仑汽油价格相加以后，税款将会是每加仑汽油的最终价格的百分之多少?
解：本题的正确答案为(C)。由图可知，加拿大每加仑汽油的含税价格是$1.7，而税款为每加仑$0.8，税款加倍后为每加仑$1.6，因此每加仑的税款将是每加仑汽油最终价格的1.6/(1.7+0.8)=0.64。
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