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# EDITED Month Average Priceper Dozen April $1.26 May$1.20

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Joined: 20 Sep 2006
Posts: 631
EDITED Month Average Priceper Dozen April $1.26 May$1.20 [#permalink]

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Updated on: 29 Jul 2008, 16:56
EDITED

Month Average Priceper Dozen
April $1.26 May$1.20
June $1.08 19. The table above shows the average (arithmetic mean) price per dozen of the large grade A eggs sold in a certain store during three successive months. If 2/3 as many dozen were sold in April as in May, and twice as many were sold in June as in April, what was the average price per dozen of the eggs sold over the three-month period? (A)$1.08
(B) $1.10 (C)$1.14
(D) $1.16 (E)$1.18

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Originally posted by rao on 29 Jul 2008, 14:51.
Last edited by rao on 29 Jul 2008, 16:56, edited 2 times in total.
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29 Jul 2008, 14:57
rao_1857 wrote:
Month Average Priceper Dozen
April $1.26 May$1.20
June $1.08 19. The table above shows the average (arithmetic mean) price per dozen of the large grade A eggs sold in a certain store during three successive months. If as many dozen were sold in April as in May, and twice as many were sold in June as in April, what was the average price per dozen of the eggs sold over the three-month period? (A)$1.08
(B) $1.10 (C)$1.14
(D) $1.16 (E)$1.18

[1.26 + 1.2 + (2)*1.08]/4 = 4.62/4 = 1.155

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Joined: 18 Jan 2008
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29 Jul 2008, 15:54
The only thing I will add from jasonc's solution is that:
You need to make some assumption.
Say, let April sales = X
then May sales = X, June sales = 2X

It is implied in jasonc's equation that X=1, else it would look like the following:
$$[1.26X + 1.2X + (2X)*1.08]/(X+X+2X)$$ = sum of all dollar sales/sum of all products sold

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Re: av/mean   [#permalink] 29 Jul 2008, 15:54
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# EDITED Month Average Priceper Dozen April $1.26 May$1.20

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