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Register now and save up to $200 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 Study Smarter, Not Harder 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 • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code ## A doctor prescribed 18 cubic centimeters tagged by: Brent@GMATPrepNow This topic has 4 expert replies and 1 member reply rsarashi Master | Next Rank: 500 Posts Joined 24 Dec 2016 Posted: 186 messages Followed by: 2 members Upvotes: 5 #### A doctor prescribed 18 cubic centimeters Thu Feb 09, 2017 9:25 am A doctor prescribed 18 cubic centimeters of a certain drug to a patient whose body weight was 120 pounds. If the typical dosage is 2 cubic centimeters per 15 pounds of the body weight, by what percent was the prescribed dosage greater than the typical dosage? A) 8% B) 9% C) 11% D) 12.5% E) 14.8% OAD Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums! shashank.ism Legendary Member Joined 20 Jul 2009 Posted: 1021 messages Followed by: 2 members Upvotes: 41 Test Date: ND Target GMAT Score: 780 GMAT Score: NA Top Reply Fri Feb 10, 2017 4:41 am rsarashi wrote: A doctor prescribed 18 cubic centimeters of a certain drug to a patient whose body weight was 120 pounds. If the typical dosage is 2 cubic centimeters per 15 pounds of the body weight, by what percent was the prescribed dosage greater than the typical dosage? A) 8% B) 9% C) 11% D) 12.5% E) 14.8% OAD Dose is 2 cc per 15 pound. Patient weight is 120 pound. The dose required by patient is 120/15 x 2 = 16 cc Dose recommended by doctor is 18 cc. Percentage by which prescribed dose is higher = 2/16 x 100 = 12.5% Answer D _________________ My Websites: http://mba.webmaggu.com - India's social Network for MBA Aspirants http://deal.webmaggu.com -India's online discount, coupon, free stuff informer. http://dictionary.webmaggu.com - A compact free online dictionary with images. Nothing is Impossible, even Impossible says I'm possible. ### GMAT/MBA Expert Jeff@TargetTestPrep GMAT Instructor Joined 09 Apr 2015 Posted: 506 messages Followed by: 6 members Upvotes: 39 Top Reply Wed Feb 15, 2017 9:39 am rsarashi wrote: A doctor prescribed 18 cubic centimeters of a certain drug to a patient whose body weight was 120 pounds. If the typical dosage is 2 cubic centimeters per 15 pounds of the body weight, by what percent was the prescribed dosage greater than the typical dosage? A) 8% B) 9% C) 11% D) 12.5% E) 14.8% The typical dosage is 2 cubic centimeters (cc) per 15 pounds of body weight. We can set up a proportion to determine what the typical number of cc of the drug would be for a patient with a body weight of 120 pounds: 2/15 = x/120 240 = 15x 240/15 = x 16 = x Thus, the typical dose for this 120-pound patient is 16 cc. To determine the percent greater than this dose that 18 cc would be, we can use the percent change formula. (Doctor dose - typical dose)/typical dose x 100% (18 - 16)/16 x 100% = 2/16 x 100% = 0.125 x 100% = 12.5% Answer: D _________________ Jeffrey Miller Head of GMAT Instruction shashank.ism Legendary Member Joined 20 Jul 2009 Posted: 1021 messages Followed by: 2 members Upvotes: 41 Test Date: ND Target GMAT Score: 780 GMAT Score: NA Fri Feb 10, 2017 4:41 am rsarashi wrote: A doctor prescribed 18 cubic centimeters of a certain drug to a patient whose body weight was 120 pounds. If the typical dosage is 2 cubic centimeters per 15 pounds of the body weight, by what percent was the prescribed dosage greater than the typical dosage? A) 8% B) 9% C) 11% D) 12.5% E) 14.8% OAD Dose is 2 cc per 15 pound. Patient weight is 120 pound. The dose required by patient is 120/15 x 2 = 16 cc Dose recommended by doctor is 18 cc. Percentage by which prescribed dose is higher = 2/16 x 100 = 12.5% Answer D _________________ My Websites: http://mba.webmaggu.com - India's social Network for MBA Aspirants http://deal.webmaggu.com -India's online discount, coupon, free stuff informer. http://dictionary.webmaggu.com - A compact free online dictionary with images. Nothing is Impossible, even Impossible says I'm possible. ### GMAT/MBA Expert Jeff@TargetTestPrep GMAT Instructor Joined 09 Apr 2015 Posted: 506 messages Followed by: 6 members Upvotes: 39 Wed Feb 15, 2017 9:39 am rsarashi wrote: A doctor prescribed 18 cubic centimeters of a certain drug to a patient whose body weight was 120 pounds. If the typical dosage is 2 cubic centimeters per 15 pounds of the body weight, by what percent was the prescribed dosage greater than the typical dosage? A) 8% B) 9% C) 11% D) 12.5% E) 14.8% The typical dosage is 2 cubic centimeters (cc) per 15 pounds of body weight. We can set up a proportion to determine what the typical number of cc of the drug would be for a patient with a body weight of 120 pounds: 2/15 = x/120 240 = 15x 240/15 = x 16 = x Thus, the typical dose for this 120-pound patient is 16 cc. To determine the percent greater than this dose that 18 cc would be, we can use the percent change formula. (Doctor dose - typical dose)/typical dose x 100% (18 - 16)/16 x 100% = 2/16 x 100% = 0.125 x 100% = 12.5% Answer: D _________________ Jeffrey Miller Head of GMAT Instruction ### GMAT/MBA Expert DavidG@VeritasPrep Legendary Member Joined 14 Jan 2015 Posted: 2459 messages Followed by: 115 members Upvotes: 1153 GMAT Score: 770 Thu Feb 09, 2017 9:45 am rsarashi wrote: A doctor prescribed 18 cubic centimeters of a certain drug to a patient whose body weight was 120 pounds. If the typical dosage is 2 cubic centimeters per 15 pounds of the body weight, by what percent was the prescribed dosage greater than the typical dosage? A) 8% B) 9% C) 11% D) 12.5% E) 14.8% OAD We could also do a little back-solving here. The easiest answer choice to test would be D, as 12.5% converts to a nice fraction, 1/8. If 18 is 1/8 more than the appropriate amount, then 18 is 9/8 of this amount. 18 = (9/8)x --> 16 = x. If the appropriate amount is 16, and the weight is 120, we get a ratio of 16/120 or 2/15. That's what we want! The answer is D _________________ Veritas Prep | GMAT Instructor Veritas Prep Reviews Save$100 off any live Veritas Prep GMAT Course

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