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# My comprehensive Quant Flashcards!

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Intern
Joined: 30 Jun 2011
Posts: 1
Re: My comprehensive Quant Flashcards! [#permalink]

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01 Jul 2011, 07:36
Thanks for this! Really appreciate people like you providing free resources!
Intern
Joined: 19 Apr 2011
Posts: 3
Re: My comprehensive Quant Flashcards! [#permalink]

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05 Jul 2011, 12:51
Senior Manager
Joined: 14 May 2011
Posts: 276
Location: Costa Rica
GMAT 1: 710 Q42 V45
GMAT 2: 740 Q48 V42
GPA: 3.3
WE: Research (Consulting)
Re: My comprehensive Quant Flashcards! [#permalink]

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07 Jul 2011, 05:28
few typos, but otherwise very well formatted.
Really like the slides on combinatorics & probability.
Also going to do this at work!! Thanks MiguelMick!
_________________

Work experience (as of June 2012)
2.5 yrs (Currently employed) - Mckinsey & Co. (US Healthcare Analyst)
2 yrs - Advertising industry (client servicing)

Intern
Joined: 09 Jun 2011
Posts: 2
Re: My comprehensive Quant Flashcards! [#permalink]

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07 Jul 2011, 08:15
Awesome, thank you.
Manager
Status: On...
Joined: 16 Jan 2011
Posts: 181
Re: My comprehensive Quant Flashcards! [#permalink]

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07 Jul 2011, 14:30
1
This post was
BOOKMARKED
Well organized....

But for weighted average, I feel an alternative approach will be easy

Quote:
Percents and weighted averages
Cereal K is 10% sugar and Cereal B is 2% sugar. What should be the ratio of them to produce a 4% sugar cereal?
Technique: Pick a smart number for one of the quantities and call the other quantity x. For example, picking 100 grams for Cereal K:
100*0.1 + 0.02*x = 0.04(100 + x)  10 + 0.02x = 4 + 0.04x
0.02x = 6  x = 300
So, the ratio is 3 parts of Cereal B to each part of Cereal K, or 1:3

10k+2b=4(k+b) ==>6k=2b ==> k:b = 1:3

Quote:
Percent Change and Weighted Averages
The revenue from pen sales was up 5%, but the revenue from pencil sales declined 13%. If the overall revenue was down 1%, what was the ratio of pen and pencil revenues?
105 + 0.87x = 0.99(100 + x)  6 = 0.12x  x = 50
So, the ratio is 2:1

105Pen+87Pencil=99(Pen+Pencil) ==> 6Pen = 12Pencil ==> Pen : Pencil = 2:1

In fact this approach can be applied to any mixture problem : add/replace/remove combinations
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Labor cost for typing this post >= Labor cost for pushing the Kudos Button
http://gmatclub.com/forum/kudos-what-are-they-and-why-we-have-them-94812.html

Intern
Joined: 07 Apr 2011
Posts: 5
Re: My comprehensive Quant Flashcards! [#permalink]

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07 Jul 2011, 19:20
Intern
Joined: 08 May 2011
Posts: 3
Re: My comprehensive Quant Flashcards! [#permalink]

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08 Jul 2011, 10:56
Thank u very much for such a comprehensible PPt..

This is my first post on this club.. How do I give kudos to anyone?

For now My kudos to you ...
Intern
Status: I will it!
Joined: 23 Dec 2010
Posts: 7
Location: India
Concentration: General Management, Operations
GMAT 1: 610 Q44 V24
GPA: 3.8
WE: Analyst (Computer Software)
Re: My comprehensive Quant Flashcards! [#permalink]

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09 Jul 2011, 09:13
Thanks! they are good!
Manager
Joined: 29 Jul 2010
Posts: 124
WE: Real Estate (Venture Capital)
Re: My comprehensive Quant Flashcards! [#permalink]

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17 Jul 2011, 11:55
Thanks will give these a look!
Manager
Joined: 05 Jan 2010
Posts: 76
Concentration: Finance, Real Estate
WE: Asset Management (Real Estate)
Re: My comprehensive Quant Flashcards! - updated with TOC [#permalink]

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20 Jul 2011, 11:10
These flashcards are very useful. I have updated file with a table of content. Hope you find it helpful.
Thanks.
Attachments

Flashcards - Quantitative Review-4.ppt [1.46 MiB]

Manager
Joined: 06 Jul 2011
Posts: 123
Schools: Columbia
Re: My comprehensive Quant Flashcards! [#permalink]

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03 Aug 2011, 04:57
Slide 49 Typo:
y=4 not -4
Slide 50 Typo:
4^8 x (1 + 4 + 4^2) - {you used + instead of multiply}

Ok lots of typos, too many to list, but great tool to refresh. Thanks OP!!!
Manager
Joined: 30 Jul 2011
Posts: 113
Location: United States (NJ)
Concentration: General Management, Finance
GMAT 1: 520 Q40 V21
GPA: 2.95
Re: My comprehensive Quant Flashcards! [#permalink]

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04 Aug 2011, 09:09
Quick question.

On slide 27 with the "Coordinate Plan: Difficult Question," how did you reach the point on the x-axis -2.75 after the calculating $$3x=4 -- x=.75$$?

Likewise for the y-axis coordinate.

Thanks!
Intern
Joined: 18 May 2010
Posts: 1
Re: My comprehensive Quant Flashcards! [#permalink]

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16 Aug 2011, 10:30
These are really, really helpful. Thanks a bunch!
Manager
Status: Will Retake GMAT
Joined: 29 Jul 2010
Posts: 128
Location: India
Concentration: General Management, Entrepreneurship
Schools: Stanford '13 (D)
GPA: 3.11
WE: Information Technology (Computer Software)
Re: My comprehensive Quant Flashcards! [#permalink]

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17 Aug 2011, 03:27
Thanks a lot. These are really great.. +1
_________________

Re-taking GMAT. Hope the charm works this time..

Intern
Joined: 27 Aug 2011
Posts: 1
Re: My comprehensive Quant Flashcards! [#permalink]

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27 Aug 2011, 20:02
Thank you for sharing us wonderful materials.
Intern
Joined: 23 Aug 2011
Posts: 5
Re: My comprehensive Quant Flashcards! [#permalink]

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31 Aug 2011, 06:32
An excellent and comprehensive collection..Thanks a ton ..
I really appreciate the effort put in making very high standard presentation

Regards
Senior Manager
Status: mba here i come!
Joined: 07 Aug 2011
Posts: 260
Re: My comprehensive Quant Flashcards! [#permalink]

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03 Sep 2011, 05:56
+1 kudos. hats off!
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Intern
Joined: 15 Sep 2011
Posts: 3
Re: My comprehensive Quant Flashcards! [#permalink]

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15 Sep 2011, 17:55
Thanks mate help appreciated
Manager
Joined: 09 Jul 2009
Posts: 51
Location: Bangalore
Schools: ISB
Re: My comprehensive Quant Flashcards! [#permalink]

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18 Sep 2011, 06:02
lets say there are x pen and y pencils
then from mixtures formula
x(5-1)=y(13-5)
4x=8y
x/y=2:1

I found it to be the easiest way
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The only way of finding the limits of the possible is by going beyond them into the impossible.

Manager
Status: Essaying
Joined: 27 May 2010
Posts: 143
Location: Ghana
Concentration: Finance, Finance
Schools: Cambridge
GMAT 1: 690 Q47 V37
GPA: 3.9
WE: Accounting (Education)
Re: My comprehensive Quant Flashcards! [#permalink]

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19 Sep 2011, 02:15
Great Job they will come in handy.... Thanks
Re: My comprehensive Quant Flashcards!   [#permalink] 19 Sep 2011, 02:15

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