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.
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
If the positive integer b is 5% greater than the positive integer a, w
[#permalink]
03 Apr 2021, 21:23
03 Apr 2021, 21:23
Expert Reply
1
Bookmarks
00:00
Question Stats:
40% (01:13) correct
60% (01:15) wrong based on 5 sessions
Hide Show timer Statistics
If the positive integer b is 5% greater than the positive integer a, which of the following expressions must be equal to an integer?
I. b/3
II. b/5
III. b/7
A. None
B. II only
C. I and II only
D. I and III only
E. II and III only
I. b/3
II. b/5
III. b/7
A. None
B. II only
C. I and II only
D. I and III only
E. II and III only
Retired Moderator
Joined: 16 Apr 2020
Status:Founder & Quant Trainer
Affiliations: Prepster Education
Posts: 1546
Given Kudos: 172
Location: India
WE:Education (Education)
Re: If the positive integer b is 5% greater than the positive integer a, w
[#permalink]
04 Apr 2021, 00:59
04 Apr 2021, 00:59
1
GeminiHeat wrote:
If the positive integer b is 5% greater than the positive integer a, which of the following expressions must be equal to an integer?
I. b/3
II. b/5
III. b/7
A. None
B. II only
C. I and II only
D. I and III only
E. II and III only
I. b/3
II. b/5
III. b/7
A. None
B. II only
C. I and II only
D. I and III only
E. II and III only
\(b = 1.05a = \frac{105}{100}a = \frac{21}{20}a\)
If \(a\) and \(b\) are to be integers, then \(a\) must be a factor of \(20\)
i.e. \(a = 20, 40, 60, ....\)
Therefore, \(b\) must be a factor of \(21 = (3)(7)\)
Hence, option D
Re: If the positive integer b is 5% greater than the positive integer a, w
[#permalink]
04 Apr 2021, 06:07
04 Apr 2021, 06:07
why not option a?
