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[Data Sufficiency]
试题详情
题目：
A certain plumber charges $92 for each job completed in 4 hours or less and $23 per hour for each job completed in more than 4 hours. If it took the plumber a total of 7 hours to complete two separate jobs, what was the total amount charged by the plumber for the two jobs?
- The plumber charged $92 for one of the two jobs.
- The plumber charged $138 for one of the two jobs.
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:
B
提问：
老师 我想请问一下为什么选B呢 条件1我认为是对的 因为收入92 花了四个小时 总共是七个小时 那么就是92+23（7-4）所以是对的呀 条件二用138-92=46 再➗23就是两个小时 所以一共花了6小时 成立
解答：
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提问：
老师 我想请问一下为什么选B呢 条件1我认为是对的 因为收入92 花了四个小时 总共是七个小时 那么就是92+23（7-4）所以是对的呀 条件二用138-92=46 再➗23就是两个小时 所以一共花了6小时 成立
解答：
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