Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 22 May 2015, 10:06

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Which of the following fractions is at least twice greater t

Author Message
TAGS:
Intern
Joined: 01 Apr 2013
Posts: 23
Followers: 0

Kudos [?]: 18 [0], given: 9

Which of the following fractions is at least twice greater t [#permalink]  04 Apr 2013, 16:09
00:00

Difficulty:

25% (medium)

Question Stats:

69% (01:56) correct 31% (00:53) wrong based on 123 sessions

Which of the following fractions is at least twice greater than 11/50?

A. 2/5
B. 11/34
C. 43/99
D. 8/21
E. 9/20

It looks very easy but what is the fastest way to solve it ?
[Reveal] Spoiler: OA

_________________

Manager
Joined: 21 Aug 2010
Posts: 190
Location: United States
GMAT 1: 700 Q49 V35
Followers: 1

Kudos [?]: 41 [0], given: 141

Re: Which of the following fractions is at least twice greater t [#permalink]  04 Apr 2013, 16:31
Tagger wrote:

Which of the following fractions is at least twice greater than 11/50?

A. 2/5
B. 11/34
C. 43/99
D. 8/21
E. 9/20

It looks very easy but what is the fastest way to solve it ?

11/50=0.22
9/20=0.45 which is 0.01 greater than two times of 0.22
_________________

-------------------------------------

Manager
Status: Looking to improve
Joined: 15 Jan 2013
Posts: 177
GMAT 1: 530 Q43 V20
GMAT 2: 560 Q42 V25
GMAT 3: 650 Q48 V31
Followers: 1

Kudos [?]: 49 [2] , given: 65

Re: Which of the following fractions is at least twice greater t [#permalink]  04 Apr 2013, 17:04
2
KUDOS
The fastest way to solve this problem is to use POE and approx by making the denominator same

A) 2/ 5 = 20/50 numerator is less than 22 so out.
B) 11/34 = 550 / 170 numerator is less than 746 so out.
C) 43 / 99 = approx. 43 / 100 numerator is much less than 80 so out.
D. 8/21 = approx. 40 / 100 close to C so out..
E. 9/20 = 45 / 100 numerator is more than twice 22 so Answer is E

//Kudos please, if the above explanation is good.
_________________

KUDOS is a way to say Thank You

Verbal Forum Moderator
Joined: 10 Oct 2012
Posts: 629
Followers: 54

Kudos [?]: 711 [0], given: 135

Re: Which of the following fractions is at least twice greater t [#permalink]  04 Apr 2013, 20:47
Expert's post
Tagger wrote:

Which of the following fractions is at least twice greater than 11/50?

A. 2/5
B. 11/34
C. 43/99
D. 8/21
E. 9/20

It looks very easy but what is the fastest way to solve it ?

11/50 -->0.22. Now, we want to look at a value which is atleast 0.44 or more.

A-->0.4
B-->11/34 == 11/33(As we decreased the denominator, the actual value will be a little less) than 0.33
C-->43/99== 44/99(the actual value will be a little less) than 0.44
D-->8/21==8/20(the actual value will be a little less) than 0.4
E-->9/20==8/20(the actual value will be a little more) =0.45

E.
_________________
Intern
Joined: 01 Apr 2013
Posts: 23
Followers: 0

Kudos [?]: 18 [0], given: 9

Re: Which of the following fractions is at least twice greater t [#permalink]  05 Apr 2013, 02:52
Thx fellows !

Since we're not allowed to use calculators, nt2010 method is the fastest I think.
_________________

GMAT Club Legend
Joined: 09 Sep 2013
Posts: 4920
Followers: 298

Kudos [?]: 54 [0], given: 0

Re: Which of the following fractions is at least twice greater t [#permalink]  14 Jan 2015, 01:33
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
SVP
Status: The Best Or Nothing
Joined: 27 Dec 2012
Posts: 1858
Location: India
Concentration: General Management, Technology
WE: Information Technology (Computer Software)
Followers: 22

Kudos [?]: 893 [0], given: 193

Re: Which of the following fractions is at least twice greater t [#permalink]  14 Jan 2015, 20:31

Rationalise the denominator, $$\frac{9}{20} = \frac{45}{100}$$ is the highest
_________________

Kindly press "+1 Kudos" to appreciate

Re: Which of the following fractions is at least twice greater t   [#permalink] 14 Jan 2015, 20:31
Similar topics Replies Last post
Similar
Topics:
5 Which of the following fractions can be written as the 4 07 Jun 2014, 23:45
which of the following must be greater 4 23 Mar 2011, 03:55
Which of the following fractions has a decimal equivalent 2 23 Aug 2006, 00:33
Which of the following fractions has a decimal equivalent 3 21 Jul 2006, 19:56
Which of the following fractions has a decimal equivalent 2 16 Jan 2006, 10:21
Display posts from previous: Sort by