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# Last Sunday a certain store sold copies of Newspaper A for

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Joined: 21 Jul 2006
Posts: 1455
Last Sunday a certain store sold copies of Newspaper A for [#permalink]

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15 Sep 2008, 05:34
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Last Sunday a certain store sold copies of Newspaper A for \$1.00 each and copies of Newspaper B for \$1.25 each, and the store sold no other newspapers that day. If r percent of the store's revenues from newspaper sales was from Newspaper A and if p percent of the newspapers that the store sold were copies of Newspaper A, which of the following expresses r in terms of p?

For the sake of practice, i'm not gonna include the multiple choice answers here. I do know how to solve this problem, but i'm interested to know other possible approaches to this problem. I do know a good quick solution to this problem, but, of course, it's always better learn the different approaches to solve a problem like this.

enjoy it!

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Joined: 15 Dec 2008
Posts: 52
Schools: HBS(08) - Ding. HBS, Stanford, Kellogg, Tuck, Stern, all dings. Yale - Withdrew App. Emory Executive -- Accepted, Matriculated, Withdrewed (yes, I spelled it wrong on purpose). ROSS -- GO BLUE 2011.

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17 Mar 2009, 09:25
[quote="tarek99"]Last Sunday a certain store sold copies of Newspaper A for \$1.00 each and copies of Newspaper B for \$1.25 each, and the store sold no other newspapers that day. If r percent of the store's revenues from newspaper sales was from Newspaper A and if p percent of the newspapers that the store sold were copies of Newspaper A, which of the following expresses r in terms of p?

Simple, R+P=1, therefore R=1-P

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If you would like to discuss this question please re-post it in the respective forum. Thank you!

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Re: PS: Newspaper   [#permalink] 17 Mar 2009, 09:25
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