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在多姿多彩的现实生活中,经常需要列分式方程解决生活中的应用性问题,这类问题选题背景比较广泛,下面从2014年中考试题中选几例说明.一、商场搞促销例1(2014·广东,第21题7分)某商场销售的一款空调机每台的标价是1635元,在一次促销活动中,按标价的八折销售,仍可盈利9%.(1)求这款空调每台的进价(利润率=(利润)/(进价)=(利润-进价)/(进价)).(2)在这次促销活动中,商场销售了这款空调机
In colorful real life, it is often necessary to formulate fractional equations to solve practical problems in life. These topics have a wide range of topics for selection. Here are a few examples from the 2014 midterm exams. (2014 · Guangdong, Question 21, 7 points) The price of an air conditioner sold in a shopping center is 1,635 yuan per unit, and it is still 9% profitable at a discount of 20% of the sale price in a promotion. The price of each air conditioner (profit margin = (profit) / (purchase price) = (profit - purchase price) / (purchase price)) (2) In this promotion, the mall sells the air conditioner machine