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30 Jan 2024, 09:17
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
76% (01:59) correct
24%
(02:35)
wrong
based on 962
sessions
History
Date
Time
Result
Not Attempted Yet
At a certain college last year, a total of 260 students took College Algebra in either the fall semester or the spring semester or both. If 40 students took College Algebra in both semesters and twice as many students took College Algebra in the fall semester as in the spring semester, how many students took College Algebra in the fall semester last year?
A. 73
B. 100
C. 142
D. 160
E. 200
2024-01-30_20-14-26.png [ 57.2 KiB | Viewed 11593 times ]
A. 73
B. 100
C. 142
D. 160
E. 200
Attachment:
2024-01-30_20-14-26.png [ 57.2 KiB | Viewed 11593 times ]
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30 Jan 2024, 09:21
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guddo
- {Total} = {Fall} + {Autumn} - {Both} + {Neither}
260 = 2x + x - 40 + 0
x = 100
Therefore, {Fall} = 2* {Autumn} = 200.
Answer: E.
29 Oct 2024, 11:44
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Classic overlapping sets. Personally, I always just use a chart even when the formula is quicker because all 2 group problems can be done with a chart:
