From MitDavidDv: GMAT Quant-Math Question #2 : GMAT Problem Solving (PS)
Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 26 Feb 2017, 14:19

### 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

# From MitDavidDv: GMAT Quant-Math Question #2

Author Message
TAGS:

### Hide Tags

Manager
Joined: 28 Jan 2011
Posts: 76
Location: Tennessee
Schools: Belmont University
Followers: 2

Kudos [?]: 160 [0], given: 73

From MitDavidDv: GMAT Quant-Math Question #2 [#permalink]

### Show Tags

07 Apr 2011, 14:43
00:00

Difficulty:

25% (medium)

Question Stats:

77% (01:40) correct 23% (00:34) wrong based on 92 sessions

### HideShow timer Statistics

What is 2 2/3 - 1 1/4 divided by 1/2 - 1/6 ?

A. 17/36
B. 36/17
C. 17/6
D. 17/4
E. 51/4
[Reveal] Spoiler: OA
Math Forum Moderator
Joined: 20 Dec 2010
Posts: 2021
Followers: 162

Kudos [?]: 1741 [1] , given: 376

Re: From MitDavidDv: GMAT Quant-Math Question #2 [#permalink]

### Show Tags

07 Apr 2011, 14:55
1
KUDOS
MitDavidDv wrote:
What is 2 2/3 - 1 1/4 divided by 1/2 - 1/6 ?

A. 17/36
B. 36/17
C. 17/6
D. 17/4
E. 51/4

$$\frac{2\frac{2}{3}-1\frac{1}{4}}{\frac{1}{2}-\frac{1}{6}}=\frac{\frac{8}{3}-\frac{5}{4}}{\frac{1}{2}-\frac{1}{6}}=\frac{\frac{8*4-5*3}{12}}{\frac{6-2}{12}}=\frac{\frac{32-15}{12}}{\frac{4}{12}}=\frac{32-15}{4}=\frac{17}{4}$$

Ans: "D"
_________________
SVP
Joined: 16 Nov 2010
Posts: 1672
Location: United States (IN)
Concentration: Strategy, Technology
Followers: 33

Kudos [?]: 522 [1] , given: 36

Re: From MitDavidDv: GMAT Quant-Math Question #2 [#permalink]

### Show Tags

07 Apr 2011, 20:15
1
KUDOS
2 2/3 - 1 1/4 = 8/3 - 5/4 = (32 - 15 )/12 = 17/12

1/2 - 1/6 = (3-1)/6 = 2/6 = 1/3

So 17/12/1/3 = 17/12 * 3 = 17/4

_________________

Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)

GMAT Club Premium Membership - big benefits and savings

Manager
Joined: 17 Jan 2011
Posts: 231
Followers: 1

Kudos [?]: 36 [0], given: 4

Re: From MitDavidDv: GMAT Quant-Math Question #2 [#permalink]

### Show Tags

09 Apr 2011, 22:59
Solved mentally.
17/12/4/12 = 17/4
_________________

Good Luck!!!

***Help and be helped!!!****

Senior Manager
Joined: 03 Mar 2010
Posts: 440
Schools: Simon '16 (M)
Followers: 5

Kudos [?]: 278 [0], given: 22

Re: From MitDavidDv: GMAT Quant-Math Question #2 [#permalink]

### Show Tags

09 Apr 2011, 23:10
MitDavidDv wrote:
What is 2 2/3 - 1 1/4 divided by 1/2 - 1/6 ?

A. 17/36
B. 36/17
C. 17/6
D. 17/4
E. 51/4

(2-1), (2/3-1/4) so in mixed frac: 1 5/12 => 17/12 / 1/3 = 17/4.

Is this approach correct? or is it just a fluke?
_________________

My dad once said to me: Son, nothing succeeds like success.

Manager
Joined: 17 Jan 2011
Posts: 231
Followers: 1

Kudos [?]: 36 [0], given: 4

Re: From MitDavidDv: GMAT Quant-Math Question #2 [#permalink]

### Show Tags

09 Apr 2011, 23:49
MitDavidDv wrote:
What is 2 2/3 - 1 1/4 divided by 1/2 - 1/6 ?

A. 17/36
B. 36/17
C. 17/6
D. 17/4
E. 51/4

(2-1), (2/3-1/4) so in mixed frac: 1 5/12 => 17/12 / 1/3 = 17/4.

Is this approach correct? or is it just a fluke?

2 2/3 - 1 1/4 can be written as (2 + 2/3) - (1 + 1/4), so (2-1) + (2/3 - 1/4) = (1) + (5/12).
Earlier we converted mixed fraction to fractions, so we can do the reverse now i.e.
(1)(5/12)

_________________

Good Luck!!!

***Help and be helped!!!****

Re: From MitDavidDv: GMAT Quant-Math Question #2   [#permalink] 09 Apr 2011, 23:49
Similar topics Replies Last post
Similar
Topics:
From MitDavidDv: Problem Solving Question- MGMAT CAT #2 2 11 Jun 2011, 21:16
1 From MitDavidDv: GMAT Quant-Math Question 5 07 Apr 2011, 13:20
Questions from GMAt prep 6 09 Aug 2010, 18:58
5 some questions from gmat prep 6 01 Jan 2010, 13:58
4 Three questions from the gmat prep 10 28 May 2009, 21:42
Display posts from previous: Sort by