2. 外语
  3. For senior class pictures, a photographer charges x dollars to make a negative, 7x/10 dollars for each of the first 20 prints, a

For senior class pictures, a photographer charges x dollars to make a negative, 7x/10 dollars for each of the first 20 prints, a

admin2012-01-15  91
问题 For senior class pictures, a photographer charges x dollars to make a negative, 7x/10 dollars for each of the first 20 prints, and x/10 dollars for each print in excess of 20 prints. If $80 is the total charge to make a negative and 30 prints, what is the value of x?
选项 A、3
B、4
C、5
D、6
E、7
答案C
解析
转载请注明原文地址:https://www.kaotiyun.com/show/ACkO777K
本试题收录于： GRE QUANTITATIVE题库GRE分类
0

GRE QUANTITATIVE

GRE

相关试题推荐
随机试题
最新回复(0)