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What was the average (arithmetic mean) of the scores of the five stude

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What was the average (arithmetic mean) of the scores of the five stude [#permalink]

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New post 12 Dec 2017, 10:18
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A
B
C
D
E

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  25% (medium)

Question Stats:

91% (00:31) correct 9% (00:00) wrong based on 23 sessions

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What was the average (arithmetic mean) of the scores of the five students in Test 2?

(A) 60
(B) 65
(C) 68
(D) 70
(E) 72
[Reveal] Spoiler: OA

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Re: What was the average (arithmetic mean) of the scores of the five stude [#permalink]

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New post 12 Dec 2017, 13:50
Image

From the image, we get the scores in Test 2 for all the students

Student A,C - 70
Student B,E - 60
Student D - 80

Therefore, Average of scores in Test 2 is \(\frac{70*2 + 60*2 + 80}{5} = \frac{140 + 200}{5} = \frac{340}{5} = 68\)(Option C)
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Re: What was the average (arithmetic mean) of the scores of the five stude   [#permalink] 12 Dec 2017, 13:50
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