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  3. [img]2014m5x/ct_egreqm_egreqtbz1_0015_20135[/img] [br] The percent decrease in a

[img]2014m5x/ct_egreqm_egreqtbz1_0015_20135[/img] [br] The percent decrease in a

游客2024-01-12  63
问题 [br] The percent decrease in average number of production hours per widget from 1990 to 2000 was approximately
选项 A、44%
B、36%
C、34%
D、32%
E、27%
答案 A
解析 The correct answer is A. According to the graphs, from 1990 to 2000, the average number of production hours per widget decreased from 9 to 5. To calculate the percent decrease, divide the difference between the starting value and ending value(9-5)by the starting value: 4/9 = 0.44 , which is equivalent to 44%.
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