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In a single line of people waiting to purchase tickets for a movie, there are currently 10 people behind Shandra. If 3 of the pe
In a single line of people waiting to purchase tickets for a movie, there are currently 10 people behind Shandra. If 3 of the pe
admin
2015-03-24
43
问题
In a single line of people waiting to purchase tickets for a movie, there are currently 10 people behind Shandra. If 3 of the people who are currently in line ahead of Shandra purchase tickets and leave the line, and no one else leaves the line, there will be 8 people ahead of Shandra in line. How many people are in the line currently?
______people
选项
答案
22
解析
You are given that if 3 people currently ahead of Shandra leave the line and no one else leaves, there will be 8 people ahead of Shandra. This means that currently there are 11 people ahead of Shandra. In addition to the 11 people currently ahead of Shandra in line, Shandra herself is in line, and there are currently 10 people behind Shandra. Therefore the total number of people in line currently is 11 + 1+10, or 22. The correct answer is 22.
This explanation uses the following strategy.
Strategy 1: Translate from Words to an Arithmetic or Algebraic Representation
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