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【OG20-P276-270题】
The people in a line waiting to buy tickets to a showare standing one behind the other. Adam and Bethare among the people in the line, and Beth is standing behind Adam with a number of people between them. Ifthe number of people in front of Adam plus the numberof people behind Beth is 18, how many people in theline are behind Beth?
（1）There are a total of 32 people in the line
（2）23 people in the line are behind Adam
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分析A选项
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分析B选项
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分析C选项
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分析D选项
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分析E选项
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预约讲师一对一题目解析课程设A前有x个，A到B有y个，B后有z个；x+z=18，求z=？
1）x+y+z+2=32，只能得出来y=12，单独不充分
2）y+x+1=23，单独也不充分
结合1 2， x=10，所以z=8
题目讨论 （4条评论）
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ziqi
behind是身后啊！
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2022-03-11 10:02:38
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老白lll
x+z+y+2=32，2是指把A和B两个人也算上
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2021-12-24 17:32:09
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你这只猪
在复习第二遍
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2020-06-15 14:28:24
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emily666
求出来Z=10噢
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2020-05-10 14:02:13
