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Which year has the highest

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Carcass
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Which year has the highest [#permalink] New post   21 Apr 2022, 01:00
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GRE Prep Club Which year has the highest class-student ratio.jpg
GRE Prep Club Which year has the highest class-student ratio.jpg [ 25.75 KiB | Viewed 2048 times ]



Which year has the highest class-student ratio?

(A) 1994
(B) 1995
(C) 1996
(D) 1997
(E) 1998


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A
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Carcass
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Re: Which year has the highest [#permalink] New post   08 Aug 2022, 03:46
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Re: Which year has the highest [#permalink] New post   12 Oct 2022, 02:04
Shouldn't the answer be B?

B says 0.042 (6/140) and A says 0.0375 (4.5/120)
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Re: Which year has the highest [#permalink] New post   12 Oct 2022, 03:44
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The student-class ratio is represented by the slope of the line connecting the origin to each point on the graph. Then, the class-student ratio is the reciprocal of the slope of each line. Since the slope is 1994 is the smallest, it represents the smallest student-class ratio and thus the highest class-student ratio.
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Re: Which year has the highest [#permalink] New post   02 Nov 2022, 03:06
Hi Carcass the explanation makes sense, but in the graph there is no origin since it starts at 120 on the Y axis.
If you extend the Y axis further down to 0, you might see that the slope of 1994 is not the lowest anymore
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Re: Which year has the highest [#permalink] New post   02 Nov 2022, 03:30
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But we cannot assume this.

Even if you make the ratio # of students / # of classes and you calculate the average of students per classes 94 is the highest


120/4.5 (not reliable half class though, but for the sake we divided by this) = 26.6 which is also not possible. a student is a whole number so should be 27

1997

175/7=25

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Re: Which year has the highest [#permalink]
02 Nov 2022, 03:30
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