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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## plz solve this... tagged by: ##### This topic has 1 expert reply and 14 member replies Goto page • 1, • 2 ## plz solve this... Certain instruments used in veterinary surgery can be made either of stainless steel or of nylon. In a study of such instruments, 10 complete sterilizations of a set of nylon instruments required 3.4 times the amount of energy used to manufacture that set of instruments, whereas 50 complete sterilizations of a set of stainless steel instruments required 2.1 times the amount of energy required to manufacture that set of instruments. If the statements above are true, each of the following could be true EXCEPT: (A) The 50 complete sterilizations of nylon instruments used more energy than did the 50 complete sterilizations of the stainless steel instruments. (B) More energy was required for each complete sterilization of the nylon instruments than was required to manufacture the nylon instruments. (C) More nylon instruments than stainless steel instruments were sterilized in the study. (D) More energy was used to produce the stainless steel instruments than was used to produce the nylon instruments. (E) The total cost of 50 complete sterilizations of the stainless steel instruments was greater than the cost of manufacturing the stainless steel instruments. Ans: I am confused with option C and D Master | Next Rank: 500 Posts Joined 10 Jul 2010 Posted: 201 messages Followed by: 1 members Upvotes: 7 Id go with E we dont have the total cost any where in the stimulus...so Legendary Member Joined 07 May 2010 Posted: 1119 messages Followed by: 2 members Upvotes: 29 ruplun wrote: Certain instruments used in veterinary surgery can be made either of stainless steel or of nylon. In a study of such instruments, 10 complete sterilizations of a set of nylon instruments required 3.4 times the amount of energy used to manufacture that set of instruments, whereas 50 complete sterilizations of a set of stainless steel instruments required 2.1 times the amount of energy required to manufacture that set of instruments. If the statements above are true, each of the following could be true EXCEPT: (A) The 50 complete sterilizations of nylon instruments used more energy than did the 50 complete sterilizations of the stainless steel instruments. (B) More energy was required for each complete sterilization of the nylon instruments than was required to manufacture the nylon instruments. (C) More nylon instruments than stainless steel instruments were sterilized in the study. (D) More energy was used to produce the stainless steel instruments than was used to produce the nylon instruments. (E) The total cost of 50 complete sterilizations of the stainless steel instruments was greater than the cost of manufacturing the stainless steel instrumen Ans: I am confused with option C and D should be D C is out of scope. we dont know for sure how many set will be made.... it just compare energy... Master | Next Rank: 500 Posts Joined 18 Jun 2010 Posted: 230 messages Followed by: 2 members Upvotes: 1 then which one is correct ...can i have further concensus? Legendary Member Joined 14 Sep 2008 Posted: 1261 messages Upvotes: 27 Target GMAT Score: 801 GMAT Score: 570 IMO E is best. what is OA? _________________ Sudhanshu (have lot of things to learn from all of you) Legendary Member Joined 20 Dec 2008 Posted: 540 messages Followed by: 6 members Upvotes: 37 Is it C? OA please... Senior | Next Rank: 100 Posts Joined 19 Aug 2010 Posted: 98 messages Followed by: 1 members Upvotes: 7 Test Date: 16th Sep 2010 Target GMAT Score: 750 GMAT Score: 760 IMO: B Here's why... (A) The 50 complete sterilizations of nylon instruments used more energy than did the 50 complete sterilizations of the stainless steel instruments - Could be true since we have no idea about the absolute value of the energy consumed for sterilizing the stainless steel & nylon instrument. (B) More energy was required for each complete sterilization of the nylon instruments than was required to manufacture the nylon instruments. - The statement says that "10 complete sterilizations of a set of nylon instruments required 3.4 times the amount of energy used to manufacture that set of instruments".. Or, 1 complete sterilization took 0.34 times the energy required to manufacture those instruments. Thus, this option cannot be true. (C) More nylon instruments than stainless steel instruments were sterilized in the study. - Could be true. No info has been provided about the no. of instruments sterilized. (D) More energy was used to produce the stainless steel instruments than was used to produce the nylon instruments. - Again, could be true since no info has been provided regarding the energy used for production of the two types of instruments. (E) The total cost of 50 complete sterilizations of the stainless steel instruments was greater than the cost of manufacturing the stainless steel instruments. - Yes. This fact is clearly mentioned in the statement itself... What's the OA??? Master | Next Rank: 500 Posts Joined 18 Jul 2010 Posted: 164 messages Followed by: 4 members Upvotes: 49 GMAT Score: 710 Hi all! IMO B Step 1: Read the question stem and identify type of question. This is "inference EXCEPT" CR question. Therefore, we are looking for answer choice that must be false. Step 2: Read the paragraph. Step 3: Focus on the conclusion and read the question stem again. Step 4: Eliminate the incorrect answer choices. (A) it is possible. (B)it must be false because 3.4/10 < 1 (C)it is possible. we don't know how many instruments are in each set (D)it is possible. (E)it is possible and out of scope. Step 5: Read the final answer choice youâ€™ve selected, and read the stem again. Either confirm the answer or eliminate it. Answer B is correct. Read "Comprehensive CR Guide" http://gmatclub.com/forum/cr-guide-100473.html Hope it helps! Best, Maciek _________________ "There is no greater wealth in a nation than that of being made up of learned citizens." Pope John Paul II if you have any questions, send me a private message! should you find this post useful, please click on "thanks" button Newbie | Next Rank: 10 Posts Joined 08 Jul 2010 Posted: 5 messages I will go with E As cost factor has not been mentioned or discussed in the original paragraph Master | Next Rank: 500 Posts Joined 04 Sep 2010 Posted: 156 messages Upvotes: 1 ruplun wrote: Certain instruments used in veterinary surgery can be made either of stainless steel or of nylon. In a study of such instruments, 10 complete sterilizations of a set of nylon instruments required 3.4 times the amount of energy used to manufacture that set of instruments, whereas 50 complete sterilizations of a set of stainless steel instruments required 2.1 times the amount of energy required to manufacture that set of instruments. If the statements above are true, each of the following could be true EXCEPT: (A) The 50 complete sterilizations of nylon instruments used more energy than did the 50 complete sterilizations of the stainless steel instruments. (B) More energy was required for each complete sterilization of the nylon instruments than was required to manufacture the nylon instruments. (C) More nylon instruments than stainless steel instruments were sterilized in the study. (D) More energy was used to produce the stainless steel instruments than was used to produce the nylon instruments. (E) The total cost of 50 complete sterilizations of the stainless steel instruments was greater than the cost of manufacturing the stainless steel instruments. Ans: I am confused with option C and D IMO D. By reading the passage one cannot make out any relation between cost of manufaturing nylon instruments and cost of manuacturing stell instruments... OA..Pls...... Master | Next Rank: 500 Posts Joined 07 Apr 2010 Posted: 379 messages Upvotes: 3 Target GMAT Score: 720 The answer choices don't seem correct to me. What is the source of this question? Newbie | Next Rank: 10 Posts Joined 16 Sep 2010 Posted: 1 messages .... Junior | Next Rank: 30 Posts Joined 07 Jun 2010 Posted: 18 messages Followed by: 1 members Test Date: 13ths September Target GMAT Score: 750 GMAT Score: 620 ruplun wrote: Certain instruments used in veterinary surgery can be made either of stainless steel or of nylon. In a study of such instruments, 10 complete sterilizations of a set of nylon instruments required 3.4 times the amount of energy used to manufacture that set of instruments, whereas 50 complete sterilizations of a set of stainless steel instruments required 2.1 times the amount of energy required to manufacture that set of instruments. If the statements above are true, each of the following could be true EXCEPT: (A) The 50 complete sterilizations of nylon instruments used more energy than did the 50 complete sterilizations of the stainless steel instruments. (B) More energy was required for each complete sterilization of the nylon instruments than was required to manufacture the nylon instruments. (C) More nylon instruments than stainless steel instruments were sterilized in the study. (D) More energy was used to produce the stainless steel instruments than was used to produce the nylon instruments. (E) The total cost of 50 complete sterilizations of the stainless steel instruments was greater than the cost of manufacturing the stainless steel instruments. Ans: I am confused with option C and D You shouldn't be confused with C and D The answer is B as the amount of energy expended in making the nylon is only .34! Senior | Next Rank: 100 Posts Joined 09 Jun 2011 Posted: 72 messages Followed by: 1 members Upvotes: 14 Test Date: 12-09-2011 Target GMAT Score: 740 GMAT Score: 730 Can we have the OA? Last edited by coderversion1 on Fri Aug 12, 2011 8:20 am; edited 1 time in total Master | Next Rank: 500 Posts Joined 25 Jan 2011 Posted: 407 messages Followed by: 7 members Upvotes: 25 Test Date: 29 Agust 2011 Target GMAT Score: +700 ruplun wrote: Certain instruments used in veterinary surgery can be made either of stainless steel or of nylon. In a study of such instruments, 10 complete sterilizations of a set of nylon instruments required 3.4 times the amount of energy used to manufacture that set of instruments, whereas 50 complete sterilizations of a set of stainless steel instruments required 2.1 times the amount of energy required to manufacture that set of instruments. If the statements above are true, each of the following could be true EXCEPT: (A) The 50 complete sterilizations of nylon instruments used more energy than did the 50 complete sterilizations of the stainless steel instruments. (B) More energy was required for each complete sterilization of the nylon instruments than was required to manufacture the nylon instruments. (C) More nylon instruments than stainless steel instruments were sterilized in the study. (D) More energy was used to produce the stainless steel instruments than was used to produce the nylon instruments. (E) The total cost of 50 complete sterilizations of the stainless steel instruments was greater than the cost of manufacturing the stainless steel instruments. Ans: I am confused with option C and D IMO C there is no comparison of the numbers of sterilization of both instruments. in the passeage. It is clearly not D. _________________ The more you suffer before the test, the less you will do so in the test! • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • 5 Day FREE Trial Study Smarter, Not Harder Available with Beat the GMAT members only code • Free Veritas GMAT Class Experience Lesson 1 Live Free Available with Beat the GMAT members only code • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Free Practice Test & Review How would you score if you took the GMAT Available with Beat the GMAT members only code • 5-Day Free Trial 5-day free, full-access trial TTP Quant Available with Beat the GMAT members only code • Get 300+ Practice Questions 25 Video lessons and 6 Webinars for FREE Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

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