GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video
close
It is currently 07 May 2021, 20:28
Register
GMAT Club Tests
Decision Tracker
My Rewards
New posts
New comers' posts

Close

GMAT 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

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Go to My Error Log Learn more
Close

Request Expert Reply

Confirm Cancel
If y/x = 3, Is x a factor of y?
9 posts Go to First Unread Post
Print view
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
SORT BY:
Date
Kudos
Tags:
Find Similar Topics 

Show Tags
Hide Tags

User avatar
V
GMATBusters
Retired Moderator
Joined: 27 Oct 2017
Posts: 1991
WE:General Management (Education)
GMAT ToolKit User
If y/x = 3, Is x a factor of y? [#permalink] New post  01 Feb 2020, 18:25
1
Kudos
1
Bookmarks
Expert Reply
00:00
A
B
C
D
E

Difficulty:

65% (hard)

Question Stats:

45% (01:41) correct 55% (01:11) wrong based on 31 sessions

Hide Show timer Statistics

GMATBusters’ Quant Quiz Question -4


For questions from previous quizzes click here

If y/x = 3, Is x a factor of y?
1) x is even
2) x > 0
ShowHide Answer
Official Answer
Official Answer and Stats are available only to registered users. Register/Login.

_________________
GMATBusters Quant Quizzes are back with a BANG- Win Prizes worth more than 500$
Book online tutoring session
Signature Read More
Most Helpful Expert Reply
User avatar
V
GMATBusters
Retired Moderator
Joined: 27 Oct 2017
Posts: 1991
WE:General Management (Education)
GMAT ToolKit User
Re: If y/x = 3, Is x a factor of y? [#permalink] New post  01 Feb 2020, 18:26
Expert Reply
The Official Solution is as follows:
Image
Show Spoiler
Attachment:
WhatsApp Image 2020-02-03 at 6.49.55 PM (3).jpeg
WhatsApp Image 2020-02-03 at 6.49.55 PM (3).jpeg [ 60.88 KiB | Viewed 474 times ]

_________________
GMATBusters Quant Quizzes are back with a BANG- Win Prizes worth more than 500$
Book online tutoring session
Signature Read More
General Discussion
User avatar
V
akadiyan
BSchool Moderator
Joined: 31 May 2017
Posts: 918
Concentration: Technology, Strategy
Schools: IIM, Cass, Oxford Said
GMAT ToolKit User Premium Member Reviews Badge CAT Tests
Re: If y/x = 3, Is x a factor of y? [#permalink] New post  01 Feb 2020, 18:44
If y/x = 3, Is x a factor of y?

1) x is even
2) x > 0

Given: y/x = 3 , y=3x

A) X is even
If x is 2 , then y=3x , substitute x in the equation and we get y = 3(2) , y = 6. This give x is a factor of y.
If x is 0.4, then y=3(0.4), y = 1.2 , This also gives X (0.4) is a factor of Y (1.2)

Option A is sufficient.

B) x > 0
This says X is a non negative number. We have already considered an even number x=2 in option A. Even if we consider X as negative number, X is a factor of Y.

Option B is sufficient.

Ans: D
_________________
GMATCLUB QUANT Practice Sets Link Collection |Last 30 days before GMAT | How to improve your verbal score

Profiles of Admitted applicants 2021 Intake
Signature Read More
avatar
B
ITGMAT
Intern
Intern
Joined: 20 Sep 2015
Posts: 27
Location: India
WE:Research (Energy and Utilities)
Re: If y/x = 3, Is x a factor of y? [#permalink] New post  01 Feb 2020, 19:31
Qs : Is x a factor of y?

given :
as y/x= 3 i.e. y= 3x,
y could be = 3, 6, 9, 12, 15, 18....

1) x is even

as x is even so
x = 2, 4, 6,
and y= 6, 12, 18,...
we see that x is always a factor of y , y/x = integer. hence sufficient to answer.

2) x > 0
in statement, no information is given whether x is integer or fraction. if it is integer then above case may be valid but in case of fraction it may not be the case.
consider x= 1/3, so y= 3 x 1/3= 1
but 1/3 is not a factor of 1 hence it not always true. not sufficient condition.

Answer is A.
avatar
B
AndreV
Intern
Intern
Joined: 17 Aug 2019
Posts: 24
If y/x = 3, Is x a factor of y? [#permalink] New post  Updated on: 03 Feb 2020, 12:47
All wee need to know to answer this question is whether x is a non-zero integer. From y/x we know that x is different from 0, so all there is to know is whether x is an integer. .
1) It says that x is even, and; therefore, an integer.
Clearly, this statement is sufficient.
2) Here x is a non-zero number but it does not specify whether x is an integer or not.
Clearly, this statement is insufficient.

Answer: A

Originally posted by AndreV on 01 Feb 2020, 20:08.
Last edited by AndreV on 03 Feb 2020, 12:47, edited 2 times in total.
User avatar
V
TheNightKing
VP
VP
Joined: 18 Dec 2017
Posts: 1400
Location: United States (KS)
GMAT 1: 600 Q46 V27
Re: If y/x = 3, Is x a factor of y? [#permalink] New post  01 Feb 2020, 20:57
Given : y/x=3

Is x a factor of y? Y/N

Let's consider cases before going for statements.
y=6 x=2 Obvious case.
y=3 x=1
y=-3 x=-1
y=1 x=1/3
y=12 x=4
y=-6 x=-2

Statement 1) x is even
Sufficient. From all the examples above. Fractions cannot be even. So that cannot be the case.

Statement 2) x > 0

y=1 x=1/3 - No
y=12 x=4 - Yes

Sufficient.

Answer (A)
_________________
The Moment You Think About Giving Up, Think Of The Reason Why You Held On So Long

Why You Don’t Deserve A 700 On Your GMAT

Learn from the Legend himself: All GMAT Ninja LIVE YouTube videos by topic
You are missing on great learning if you don't know what this is: Project SC Butler
Signature Read More
User avatar
D
bm2201
RC Moderator
Joined: 05 May 2016
Posts: 723
Location: India
Premium Member Reviews Badge CAT Tests
Re: If y/x = 3, Is x a factor of y? [#permalink] New post  01 Feb 2020, 23:58
Statement 1: x is even

Since x is an integer and for y/x to be x has to be an factor y. 24/8 or 12/4. Either +ve or -ve, x will be a factor of y.

Sufficient.

Statement 2: x > 0.

If x is 1/2 the 2y = 3, so x doesn't necessarily be a a factor of y for x/y to be = to 3. and also any of the cases above, so Insufficient.

Answer A.
User avatar
V
Archit3110
GMAT Club Legend
GMAT Club Legend
Joined: 18 Aug 2017
Status:You learn more from failure than from success.
Posts: 6978
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE:Marketing (Energy and Utilities)
GMAT ToolKit User Premium Member Reviews Badge
Re: If y/x = 3, Is x a factor of y? [#permalink] New post  02 Feb 2020, 00:51
If y/x = 3, Is x a factor of y?
1) x is even
2) x > 0

#1
x is even ; so value of y would have to be a factor of x ; eg 6/2 ; 18/6 ; 12/4 ; sufficient
#2
x>0
not necessarily sufficient
as y =1 and x = 1/3 ; or any integer value of x & y
insufficient
IMO A
User avatar
P
J2S2019
Senior Manager
Senior Manager
Joined: 09 Jan 2017
Posts: 311
Location: India
Reviews Badge
Re: If y/x = 3, Is x a factor of y? [#permalink] New post  02 Feb 2020, 05:55
IMO Option D.
Rewriting the statement:-

If y/x = 3, Is x a factor of y?
1) x is even
2) x > 0

y=3x
1>X even - X is a factor of Y - Sufficient
2> X>0 - X even or odd - X is a factor of Y - Sufficeint
GMAT Club Bot
gmatclubot
Re: If y/x = 3, Is x a factor of y? [#permalink]
02 Feb 2020, 05:55
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Reviews
Moderators:
chetan2u
Math Expert
9813 posts
Bunuel
Math Expert
74516 posts
GMATBusters
Retired Moderator
1991 posts
nick1816
DS Forum Moderator
2266 posts

cron

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Main navigation

GMAT Resources

Partners

MBA Resources

www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions