NEW HERE? LEARN MORE
closeclose
Last visit was: 25 Apr 2024, 12:03 It is currently 25 Apr 2024, 12:03
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

M03 #6

avatar
dczuchta
Intern
Intern
Joined: 10 Sep 2008
Posts: 13
Own Kudos [?]: 61 [0]
Given Kudos: 0
Send PM
M03 #6 [#permalink] New post   20 Sep 2008, 17:08
A certain prime x is divided by 5 to get a fraction. Then its numerator is increased by 4 and its denominator doubled, after which the resulting fraction is reduced. The denominator of the result is odd. What is x?

1) 7
2) 5
3) 4
4) 3
5) 2

Answer: First, eliminate 4 as it is not a prime. Then either plug the choices in or notice that will have an odd denominator only if is even, which identifies as 2.
The correct answer is E.

My question: If the initial fraction is 2/5 aka 4/10 and the changed/ resulting fraction is 6/10 (2+4 and double denominator), how has the resulting fraction been reduced?

Archived Topic
Hi there,
Archived GMAT Club Tests question - no more replies possible.
Where to now? Try our up-to-date Free Adaptive GMAT Club Tests for the latest questions.
Still interested? Check out the "Best Topics" block below for better discussion and related questions.
Thank you for understanding, and happy exploring!
avatar
dzyubam
CIO
CIO
Joined: 02 Oct 2007
Posts: 880
Own Kudos [?]: 1357 [1]
Given Kudos: 334
GMAT ToolKit User
Re: M03 #6 [#permalink] New post   22 Sep 2008, 00:41
1
Kudos
Do you think our wording is wrong? If yes, could you please suggest any improvements?
The fraction \(\frac{6}{10}\) is reduced to \(\frac{3}{5}\):
\(\frac{6}{10}=\frac{\cancel{2}*3}{\cancel{2}*5}\).
avatar
dczuchta
Intern
Intern
Joined: 10 Sep 2008
Posts: 13
Own Kudos [?]: 61 [0]
Given Kudos: 0
Send PM
Re: M03 #6 [#permalink] New post   22 Sep 2008, 15:31
Thank you dzyubam for your response. I understand now what "reduced" means but I did assume it meant the resulting fraction was smaller. No I do not have any suggestions other than eliminating the "reduced" altogether and making the testers figure it out for themselves that the figure must be "reduced". Thank you.
avatar
dzyubam
CIO
CIO
Joined: 02 Oct 2007
Posts: 880
Own Kudos [?]: 1357 [0]
Given Kudos: 334
GMAT ToolKit User
Re: M03 #6 [#permalink] New post   22 Sep 2008, 16:02
Thanks :-D .
User avatar
viperm5
Intern
Intern
Joined: 09 Feb 2009
Posts: 5
Own Kudos [?]: 3 [0]
Given Kudos: 1
Send PM
Re: M03 #6 [#permalink] New post   21 Jul 2009, 15:01
dczuchta wrote:
Thank you dzyubam for your response. I understand now what "reduced" means but I did assume it meant the resulting fraction was smaller. No I do not have any suggestions other than eliminating the "reduced" altogether and making the testers figure it out for themselves that the figure must be "reduced". Thank you.



i completely agree with dczuchta.
avatar
dzyubam
CIO
CIO
Joined: 02 Oct 2007
Posts: 880
Own Kudos [?]: 1357 [0]
Given Kudos: 334
GMAT ToolKit User
Re: M03 #6 [#permalink] New post   22 Jul 2009, 01:25
Should we change "reduced" to "simplified" instead? I believe completely dropping this note will cause even more confusion.

What do you guys think?
User avatar
kt00381n
Manager
Manager
Joined: 30 Apr 2009
Posts: 79
Own Kudos [?]: 432 [0]
Given Kudos: 9
Send PM
Re: M03 #6 [#permalink] New post   17 Sep 2009, 11:11
Agree, the wording is confusing.
avatar
dzyubam
CIO
CIO
Joined: 02 Oct 2007
Posts: 880
Own Kudos [?]: 1357 [0]
Given Kudos: 334
GMAT ToolKit User
Re: M03 #6 [#permalink] New post   23 Sep 2009, 01:59
I've changed "reduced" to "simplified" in the question. Hope it clears the ambiguity.
User avatar
cvsmech
Manager
Manager
Joined: 26 May 2011
Posts: 123
Own Kudos [?]: 68 [0]
Given Kudos: 10
Concentration: Entrepreneurship, Finance
Schools: Kellogg '15 (I) Ross '15 (WL) Tepper '15 Ivey '15 (A$) Johnson '15 (S)
GPA: 3.22
Send PM
Re: M03 #6 [#permalink] New post   21 Sep 2011, 17:08
Whats wrong with 4?

4+4/10= 8/10 = 4/5?
User avatar
jeremystaub28
Intern
Intern
Joined: 03 Sep 2011
Posts: 13
Own Kudos [?]: 7 [0]
Given Kudos: 4
Send PM
GMAT ToolKit User
Re: M03 #6 [#permalink] New post   21 Sep 2011, 20:22
cvsmech wrote:
Whats wrong with 4?

4+4/10= 8/10 = 4/5?



It is not a prime number, therefore from the start we can eliminate this answer !

Archived Topic
Hi there,
Archived GMAT Club Tests question - no more replies possible.
Where to now? Try our up-to-date Free Adaptive GMAT Club Tests for the latest questions.
Still interested? Check out the "Best Topics" block above for better discussion and related questions.
Thank you for understanding, and happy exploring!
GMAT Club Bot
gmatclubot
Re: M03 #6 [#permalink]
21 Sep 2011, 20:22
Moderator:
Bunuel
Math Expert
92914 posts

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