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Sub 505 Level|   Non-Math Related|            
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gmatt1476
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Is Sarahs mathematics test score higher than the class average? 30 May 2024, 10:33
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Difficulty:

5% (low)

Question Stats:

93% (00:32) correct 7% (00:46) wrong based on 333 sessions

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­Is Sarah’s mathematics test score higher than the class average?

(1) Sarah scored 90% on her mathematics test, answering 45 out of 50 questions correctly.

(2) Sarah’s high percentage score indicates that she performed exceptionally well, with only a few questions answered incorrectly.
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Is Sarahs mathematics test score higher than the class average? 31 May 2024, 20:18
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Bunuel
­Is Sarah’s mathematics test score higher than the class average?

(1) Sarah scored 90% on her mathematics test, answering 45 out of 50 questions correctly.

(2) Sarah’s high percentage score indicates that she performed exceptionally well, with only a few questions answered incorrectly.
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­TLDR: we know nothing about the class average, so we can't make a conclusive comparison. Insufficent Together: E


Rephrase:

­Is Sarah’s mathematics test score higher than the class average?

S > A?


Statement 1:

(1) Sarah scored 90% on her mathematics test, answering 45 out of 50 questions correctly.

We know nothing about A, so it's Insufficient.


Statement 2:

(2) Sarah’s high percentage score indicates that she performed exceptionally well, with only a few questions answered incorrectly.

This statement is a bit trickier. If we over-infer and make assumptions about the word "exceptionally," we might imagine it means Sarah's performance was exceptional compared to the other students. However, we don't know this for sure. "Exceptionally" could simply mean she performed excellently relative to her own standards, and not necessarily in comparison to most of the other students.

Therefore, without clear information about the class average, it's Insufficient.


Together:

We still know nothing about the class average, so we can't make a conclusive comparison. Insufficent Together: E


More problems to try:

In contrast, here are two very hard OG questions, where we DO need to make a verbal/logical inference:

https://gmatclub.com/forum/what-percent ... l#p2565763

https://gmatclub.com/forum/five-coffee- ... l#p3348461

 ­
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