A pharmaceutical company received $3 million in royalties on the first $20 million in sales of the generic equivalent of one of its products and then $9 million in royalties on the next $108 million in sales. By approximately what percent did the ratio of royalties to sales decrease from the first $20 million in sales to the next $108 million in sales?_问的是从开始20 到后来108 减少的比例，不应该是3/20-1/12 之后再除以3/20 吗为甚答案是相反的不懂？出国考试答疑器_GMAT

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题目：

A pharmaceutical company received $3 million in royalties on the first $20 million in sales of the generic equivalent of one of its products and then $9 million in royalties on the next $108 million in sales. By approximately what percent did the ratio of royalties to sales decrease from the first $20 million in sales to the next $108 million in sales?

选项:

A、8%

B、15%

C、45%

D、52%

E、56%

提问：

问的是从开始20 到后来108 减少的比例，不应该是3/20-1/12 之后再除以3/20 吗为甚答案是相反的不懂？

解答：

阅读1248

解答： sysadmin

提问：

问的是从开始20 到后来108 减少的比例，不应该是3/20-1/12 之后再除以3/20 吗为甚答案是相反的不懂？

解答：

阅读1249

解答： sysadmin老师

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