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What was the average (arithmetic mean) score for all the fre

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GMAT Club Legend
GMAT Club Legend
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Joined: 07 Jun 2014
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GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
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What was the average (arithmetic mean) score for all the fre [#permalink] New post 29 Aug 2018, 16:35
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Question Stats:

100% (00:56) correct 0% (00:00) wrong based on 5 sessions
Score results on a college mathematics proficiency exam


FreshmenSophomores
Number of students taking the exam12080
Average (arithmetic mean) score on the exam78 points84 points


What was the average (arithmetic mean) score for all the freshmen and sophomores taking the exam? Give your answer rounded to the nearest 0.1 points.

[Reveal] Spoiler: OA
80.4

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Director
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Joined: 07 Jan 2018
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Re: What was the average (arithmetic mean) score for all the fre [#permalink] New post 30 Aug 2018, 01:16
avg = \(\frac{120*78 + 80*84}{200}\)= \(\frac{16080}{200}\) = 80.4
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Intern
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Re: What was the average (arithmetic mean) score for all the fre [#permalink] New post 31 Aug 2018, 20:46
Good question for practising the weighted average concept
Re: What was the average (arithmetic mean) score for all the fre   [#permalink] 31 Aug 2018, 20:46
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What was the average (arithmetic mean) score for all the fre

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