Data Sufficiency
试题详情
题目：
A group consisting of several families visited an amusement park where the regular admission fees were ¥5,500 for each adult and ¥4,800 for each child. Because there were at least 10 people in the group, each paid an admission fee that was 10% less than the regular admission fee. How many children were in the group?
- The total of the admission fees paid for the adults in the group was ¥29,700.
- The total of the admission fees paid for the children in the group was ¥4,860 more than the total of the admission fees paid for the adults in the group.
选项:
A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B、Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C、BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient.
E、Statements (1) and (2) TOGETHER are not sufficient.
答案:
C
提问：
这道题我明白两个一起可以确定，但是对第二个条件怎么能确定不可以解出呢？我列出48✖️（Children）-55✖️（Adult）=54，不知道怎么确定不止一个解，麻烦老师讲一下
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