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Approximately what was the average (arithmetic mean) electri

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sandy
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Approximately what was the average (arithmetic mean) electri [#permalink] New post   10 Oct 2018, 19:09
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Approximately what was the average (arithmetic mean) electric energy cost per month for the first half of the year?

(A) $45
(B) $50
(C) $60
(D) $70
(E) $75
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C
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pranab223
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Re: Approximately what was the average (arithmetic mean) electri [#permalink] New post   18 Apr 2020, 23:04
sandy wrote:
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Approximately what was the average (arithmetic mean) electric energy cost per month for the first half of the year?

(A) $45
(B) $50
(C) $60
(D) $70
(E) $75


Here,

the average (arithmetic mean) electric energy cost per month for the first half of the year = \(\frac{{ 70 + 65 + 55 + 47 + 47 + 70}}{6} = \frac{354}{6}\) = $59 = approx $60
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