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The performance of Southports two high schools has been quite consiste

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The performance of Southports two high schools has been quite consiste  [#permalink]

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New post 05 Jan 2019, 07:39
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The performance of Southports two high schools has been quite consistent over the past 5 years. In each of those years, Suburban High has enrolled 40% of Southport's students and produced 75% of the towns high school graduates, while Lakeside High has accounted for the remainder.

Which of the following can properly be inferred regarding the past 5 years from the passage above?


A. The total number of students attending each high school has remained roughly constant.

B. Students attending Suburban High come from a larger geographical area than students attending Lakeside High.

C. Lakeside High has graduated, a lower percentage of its attendees than has Suburban High.

D. The respective geographic areas from which the schools draw their student populations have remained unchanged.

E. Students attending magnet programs accounted for a higher percentage of the graduating students at Lakeside High than at Suburban High.

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Re: The performance of Southports two high schools has been quite consiste  [#permalink]

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New post 05 Jan 2019, 07:50
IMO C

C. Lakeside High has graduated, a lower percentage of its attendees than has Suburban High.
attended students: 60%, output graduated students--25%

which is less than suburban ratio of 40% , and 75%
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Re: The performance of Southports two high schools has been quite consiste  [#permalink]

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New post 15 Jan 2019, 05:05
Bunuel wrote:
The performance of Southports two high schools has been quite consistent over the past 5 years. In each of those years, Suburban High has enrolled 40% of Southport's students and produced 75% of the towns high school graduates, while Lakeside High has accounted for the remainder.

Which of the following can properly be inferred regarding the past 5 years from the passage above?


A. The total number of students attending each high school has remained roughly constant.

B. Students attending Suburban High come from a larger geographical area than students attending Lakeside High.

C. Lakeside High has graduated, a lower percentage of its attendees than has Suburban High.

D. The respective geographic areas from which the schools draw their student populations have remained unchanged.

E. Students attending magnet programs accounted for a higher percentage of the graduating students at Lakeside High than at Suburban High.


KAPLAN OFFICIAL EXPLANATION:



C

The most proper inference will be the choice that MUST be true if the statements in the stimulus are true. Any choices that might be true but do not have to be true can be
eliminated.

Suburban High enrolled 40% of the town's students and produced 75% of its graduates, so Lakeside High must have enrolled 60% of the town's students, producing 25% of its graduates. Lakeside has more students but fewer graduates, meaning that it graduated a lower percentage of its attendees than Suburban did. This makes (C) correct.

(A) could be true but doesn't necessarily follow from the stimulus. We know that the percentage of enrollees and graduates at each school has been constant, but that doesn't say anything about the total number of students, which may have increased, decreased, or stayed the same. (B), (D), and (E) are out of scope. And we have no information about the geographical areas in which students live, so (B) and (D) are out anyway.
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Re: The performance of Southports two high schools has been quite consiste   [#permalink] 15 Jan 2019, 05:05
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