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The total price of n (n > 1) equally priced copies of a

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Joined: 10 Jun 2008
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The total price of n (n > 1) equally priced copies of a  [#permalink]

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30 Nov 2008, 19:17
The total price of n (n > 1) equally priced copies of a certain book is $50. In terms of n, which of the following gives the total price of n - 1 of these copies? A) 50(n-1) B) 50/(n-1) C) {50(n-1)} / n D) 50n/(n-1) E) 50/{n(n-1)} I'm confused by the wording of this problem. My answer was B but its wrong. Any help is appreciated! Also, is it better to pick numbers or solve with variable for such problems? Thanks in advance! --== Message from GMAT Club Team ==-- This is not a quality discussion. It has been retired. If you would like to discuss this question please re-post it in the respective forum. Thank you! To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you. SVP Joined: 30 Apr 2008 Posts: 1841 Location: Oklahoma City Schools: Hard Knocks Re: Total price of n-1 copies [#permalink] Show Tags 30 Nov 2008, 19:58 1 I believe the answer is C The wording can be a bit confusing. It took me a few seconds to realize (n>1) is just telling us that n is greater than 1 and is not part of the actual problem. To break it down we need to know how much 1 book costs, and then multiply it by the new number of books. The new number of books is represented by n-1. so if the total of n books is$50, then 1 book is the total divded by the number of books summed to get that total, or 50 /n

Now we take the price of 1 (represented by 50/n) and multiply that by the new quantity of books n-1.

$$\frac{50}{n}* n-1$$ This is the same as $$\frac{50(n-1)}{n}$$ or Answer C

nikki25 wrote:
The total price of n (n > 1) equally priced copies of a certain book is $50. In terms of n, which of the following gives the total price of n - 1 of these copies? A) 50(n-1) B) 50/(n-1) C) {50(n-1)} / n D) 50n/(n-1) E) 50/{n(n-1)} I'm confused by the wording of this problem. My answer was B but its wrong. Any help is appreciated! Also, is it better to pick numbers or solve with variable for such problems? Thanks in advance! _________________ ------------------------------------ J Allen Morris **I'm pretty sure I'm right, but then again, I'm just a guy with his head up his a$$. GMAT Club Premium Membership - big benefits and savings Director Joined: 14 Aug 2007 Posts: 692 Re: Total price of n-1 copies [#permalink] Show Tags 30 Nov 2008, 20:13 1 C it is. n books = 50$, 1 book = 50/n \$ => n-1 books will cost= 50*(n-1)/n

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

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

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Re: Total price of n-1 copies &nbs [#permalink] 30 Nov 2008, 20:13
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