2. 外语
  3. A salesperson made a profit of $50 on the sale of a bicycle that cost the salesperson $180. What is the profit expressed as a pe

A salesperson made a profit of $50 on the sale of a bicycle that cost the salesperson $180. What is the profit expressed as a pe

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问题 A salesperson made a profit of $50 on the sale of a bicycle that cost the salesperson $180. What is the profit expressed as a percent of the salesperson’s cost? Give your answer to the nearest tenth of a percent.
选项
答案27.8
解析 The correct answer is 27.8. One way to solve this problem is to set up a proportion, as follows:
$50 is to $180 as x is to 100%
50/180 =x/100
180x = 5,000
x = 27.777, which should be rounded to 27.8, as per the instructions in the question.
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