2. 外语
  3. I bought four things this morning. The dictionary was 5 times the cost of the book, the tie was 30 times the cost of the book, t

I bought four things this morning. The dictionary was 5 times the cost of the book, the tie was 30 times the cost of the book, t

admin2011-01-05  59
问题 I bought four things this morning. The dictionary was 5 times the cost of the book, the tie was 30 times the cost of the book, the Watch was 4 times the cost of the tie, and I spent 312 dollars in total. What was the price of the dictionary?
选项
答案10
解析 假设字典的价格为x，那么书的价格为1／5x，领带的价格为30×1／5x，手表为4× 30×1／5x，这些东西的总价值为312，因此可得方程式X+1／5x+30×1／5x+4×30×1／5x=312，故x=10。
转载请注明原文地址:https://kaotiyun.com/show/J0kK777K
本试题收录于： D类竞赛（专科）题库大学生英语竞赛（NECCS）分类
0

D类竞赛（专科）

大学生英语竞赛（NECCS）

相关试题推荐
随机试题
最新回复(0)