3) A telephone call costs $1.25 for the first minute and : PS Archive Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack  It is currently 24 Jan 2017, 01:28 ### GMAT Club Daily Prep #### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email. Customized for You we will pick new questions that match your level based on your Timer History Track Your Progress every week, we’ll send you an estimated GMAT score based on your performance Practice Pays we will pick new questions that match your level based on your Timer History #### Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here. ### Request Expert Reply # Events & Promotions ###### Events & Promotions in June Open Detailed Calendar # 3) A telephone call costs$1.25 for the first minute and

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3) A telephone call costs $1.25 for the first minute and [#permalink] ### Show Tags 29 Sep 2008, 05:22 00:00 Difficulty: (N/A) Question Stats: 0% (00:00) correct 0% (00:00) wrong based on 0 sessions ### HideShow timer Statistics This topic is locked. If you want to discuss this question please re-post it in the respective forum. 3) A telephone call costs$1.25 for the first minute and $0.32 for each additional minute. What is the cost, in dollars, of a telephone call that lasts for x minutes, where x is an integer? (A) 0.32+ 1.25x (B) 1.25+ 0.32x (C) 0.32+ 1.25(x - 1) (D) 1.25+ 0.32(x + 1) (E) 1.25 + 0.32(x - 1) 4) The markup on a television set is 20 percent of the cost. The markup is what percent of the selling price? (markup = selling price - cost) (A) 8% (B) 10% (C) 12.5% (D) 15% (E) 16 2/3% Intern Joined: 31 Jan 2008 Posts: 9 Followers: 0 Kudos [?]: 0 [0], given: 0 Re: PS - Q 3 & 4 [#permalink] ### Show Tags 29 Sep 2008, 06:37 X is the toal dollars of the tele call, first call$1.25
therfore (x-1) will be the cost of the additional miniute i.e. 0.32(x-1)

Total= 1.25 + (x-1)*0.32

therefore (e)

lets say 100 is the cost,
therefore markup is 20%of cost(100) i.e. 20
markup= selling + cost

20 = S +100
S=120

what is 20 % of 120, it is 16.66

Re: PS - Q 3 & 4   [#permalink] 29 Sep 2008, 06:37
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