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.
At Medville Hospital, Drug Xis prescribed only for Condition
[#permalink]
18 May 2020, 05:56
18 May 2020, 05:56
Expert Reply
7
Bookmarks
00:00
Question Stats:
40% (02:31) correct
59% (02:14) wrong based on 62 sessions
Hide Show timer Statistics
At Medville Hospital, Drug X is prescribed only for Condition A and Condition B, which may occur simultaneously in the same patient. Last year, the department recorded the following statistics for prescriptions of Drug X.
Which of the following could be the number of Medville Hospital patients for whom Drug X was prescribed last year?
Indicate all such numbers.
A. 514
B. 967
C. 1,372
D. 2,198
E. 2,447
F. 3,149
#greprepclub At Medville Hospital, Drug Xis prescribed.jpg [ 34.38 KiB | Viewed 5844 times ]
Which of the following could be the number of Medville Hospital patients for whom Drug X was prescribed last year?
Indicate all such numbers.
A. 514
B. 967
C. 1,372
D. 2,198
E. 2,447
F. 3,149
Show: ::
Attachment:
#greprepclub At Medville Hospital, Drug Xis prescribed.jpg [ 34.38 KiB | Viewed 5844 times ]
Retired Moderator
Joined: 16 Apr 2020
Status:Founder & Quant Trainer
Affiliations: Prepster Education
Posts: 1546
Given Kudos: 172
Location: India
WE:Education (Education)
Re: At Medville Hospital, Drug Xis prescribed only for Condition
[#permalink]
13 Feb 2021, 01:27
13 Feb 2021, 01:27
4
1
Bookmarks
nurakib wrote:
sukrut96 wrote:
Thus, the range is from 1,600 (least amount of people who could've suffered from condition A and B) to 2,600 (maximum amount of people).
How do you calculate the least value, why can't I say least value is 1000?
Because you already have a higher value than 1000. 1600 people with Condition B have been prescribed drug X.
so, it has to be between 1600 and 2600
Think it this way;
People with Condition A = 1000
People with Condition B = 1600
People with Both the Conditions A and B = 1000 (Max. Intersection) and only Condition B = 600
Total people with prescription = 1600
i.e. (1000) + 600
Maximum = Condition A and Condition B separately = 1000 + 1600 = 2600 ......... (Only Union, no Intersection)
General Discussion
Re: At Medville Hospital, Drug Xis prescribed only for Condition
[#permalink]
18 May 2020, 06:11
18 May 2020, 06:11
2
It is given that Medville Hospital prescribes the drug only for condition A and condition B, when both of them occur.
4,000 * 0.25 = 1,000 and 2,000 * 0.8 = 1,600,
Thus, the total number of patients who used the drug were, 2,600.
Thus, the range is from 1,600 (least amount of people who could've suffered from condition A and B) to 2,600 (maximum amount of people).
Hence, option D and E fit in this range.
4,000 * 0.25 = 1,000 and 2,000 * 0.8 = 1,600,
Thus, the total number of patients who used the drug were, 2,600.
Thus, the range is from 1,600 (least amount of people who could've suffered from condition A and B) to 2,600 (maximum amount of people).
Hence, option D and E fit in this range.
