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23 Feb 2022, 06:00
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
91% (00:42) correct
9%
(00:46)
wrong
based on 55
sessions
History
Date
Time
Result
Not Attempted Yet
In a high school, some students have single majors while all others have double majors. How many more students have double majors than single majors?
(1) 60 percent of the students in the high school have double majors.
(2) There are 200 students in the high school.
(1) 60 percent of the students in the high school have double majors.
(2) There are 200 students in the high school.
01 Mar 2022, 09:31
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Bunuel
Target question: How many more students have double majors than single majors?
Statement 1: 60% of the students in the high school have double majors.
This tells us that the remaining 40% of the students have single majors.
However, since we have no information about the number of students, there's no way to answer the target question.
Statement 1 is NOT SUFFICIENT
Statement 2: There are 200 students in the high school.
Here we have no information about how the 200 students are broken into single majors and double majors.
Statement 2 is NOT SUFFICIENT
Statements 1 and 2 combined
Statement 2 tells us there are 200 students
Statement 1 tells us that 60% of those 200 students (i.e. 120 students) have a double major, which means the remaining 80 students must have a single major.
120 - 80 = 40, so there are 40 more students with double majors
Since we can answer the target question with certainty, the combined statements are SUFFICIENT
Answer: C
Cheers,
Brent
02 Aug 2023, 03:41
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