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S represents the sum of the weights of n fish in pounds.

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S represents the sum of the weights of n fish in pounds. [#permalink]

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New post 13 Nov 2008, 05:40
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S represents the sum of the weights of n fish in pounds. Which of the following represents the average (arithmetic mean) of the n weights in ounces? (1pound = 16 ounces)

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Re: prep 14 or 37 [#permalink]

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New post 13 Nov 2008, 13:03
Yes, I believe that is because to get the average you divide the sum by the # and the 16 is the conversion correct.

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Re: prep 14 or 37 [#permalink]

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New post 13 Dec 2010, 22:00
Can anyone give a full explanation instead of just the answers please? The answers are given in the GMAT Prep test, not the explanations.

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Re: prep 14 or 37 [#permalink]

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New post 14 Dec 2010, 01:50
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spyguy wrote:
Can anyone give a full explanation instead of just the answers please? The answers are given in the GMAT Prep test, not the explanations.


S represents the sum of the weights of n fish in pounds. Which of the following represents the average (arithmetic mean) of the n weights in ounces? (1pound = 16 ounces)

As the sum of n fish in pounds is S pounds and 1 pound = 16 ounces then the sum of n fish in ounces will be 16S ounces.

So, average wight of n fish in onces is average=(sum of weights is ounces)/(# of fish)=16S/n.

Hope it's clear.
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Re: prep 14 or 37 [#permalink]

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New post 14 Dec 2010, 08:51
It's very clear. Not sure why this one even held me up. Think it was one of those long study nights where even the mundane and easy seem like a never ending brick wall that you are trying to climb. Thanks Bunuel. +1 buddy and kudos.

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Re: prep 14 or 37 [#permalink]

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New post 14 Dec 2010, 21:37
average = s/n

in ounce, the average = \((s*16)/n\)

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Re: prep 14 or 37   [#permalink] 14 Dec 2010, 21:37
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S represents the sum of the weights of n fish in pounds.

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