2. 外语
  3. At a fund-raising event, 43 participants donated $60 each, 21 participants donated $80 each, and 16 participants donated $100 ea

At a fund-raising event, 43 participants donated $60 each, 21 participants donated $80 each, and 16 participants donated $100 ea

admin2017-10-16  41
问题 At a fund-raising event, 43 participants donated $60 each, 21 participants donated $80 each, and 16 participants donated $100 each. What was the average(arithmetic mean)donation per participant, in dollars?
选项
答案73.25
解析 The solution to this problem is to compute the weighted mean

When thebutton is first used, the number in the calculator display is stored in memory and an M appears to the left of the display to show that the memory function is in use. Each subsequent use of thebutton adds the number in the current display to the number stored in memory and replaces the number stored in memory by the sum. When thebutton is pressed in the computation above, the current value in memory, 5,860, is displayed. To clear the memory, use thebutton, and the M next to the display disappears.
转载请注明原文地址:https://www.kaotiyun.com/show/kgkO777K
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)