GRE Prep 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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Sep 28Live Online Class with Top GRE Expert Mike Butville
08:00 PM EDT
-10:00 PM EDT
Top scores are possible when you enroll in a powerful GRE course, taught live online + 6 months access to TTP GRE OnDemand video courses included! Class starts Mon/Wed Sept. 28, 2026 - Dec. 9, 2026, 8:00pm-10:00pm EST
A doctor prescribed 18 cubic centimeters of a certain drug t
[#permalink]
23 Jul 2020, 07:25
23 Jul 2020, 07:25
Expert Reply
2
Bookmarks
00:00
Question Stats:
63% (01:13) correct
36% (01:24) wrong based on 33 sessions
Hide Show timer Statistics
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%
A) 8%
B) 9%
C) 11%
D) 12.5%
E) 14.8%
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: A doctor prescribed 18 cubic centimeters of a certain drug t
[#permalink]
23 Jul 2020, 07:56
23 Jul 2020, 07:56
Carcass 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%
A) 8%
B) 9%
C) 11%
D) 12.5%
E) 14.8%
We can use equivalent ratios to determine what the dosage SHOULD have been.
We'll use the ratio of drug dosage (in cubic centimeters)/body weight (in pounds)
Let x = the dosage (in cubic centimeters) the patient SHOULD have received
We get: 2/15 = x/120
Cross multiply to get: 15x = (2)(120)
Simplify: 15x = 240
Solve: x = 16
So, the patient SHOULD have received a dosage of 16 cubic centimeters
Instead, the patient was prescribed a dosage of 18 cubic centimeters
Percent increase = 100(new - original)/original
= 100(18 - 16)/16
= 200/16
= 12.5
Answer: D
Re: A doctor prescribed 18 cubic centimeters of a certain drug t
[#permalink]
20 Jul 2022, 02:18
20 Jul 2022, 02:18
Please Find The Image Below -
Attachments
Screenshot 2022-07-20 at 3.48.27 PM.png [ 128.16 KiB | Viewed 2508 times ]
