BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

hamburgler

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 76
Joined: Sun Jul 20, 2008 10:47 am
Location: new york city
Thanked: 1 times

hamburgler

by mberkowitz » Sat Nov 08, 2008 9:46 am
From mgmat cat:

Guests at a recent party ate a total of fifteen hamburgers. Each guest who was neither a student nor a vegetarian ate exactly one hamburger. No hamburger was eaten by any guest who was a student, a vegetarian, or both. If half of the guests were vegetarians, how many guests attended the party?
(1) The vegetarians attended the party at a rate of 2 students to every 3 non-students, half the rate for non-vegetarians.

(2) 30% of the guests were vegetarian non-students.

I tried solving this as an overlapping set problem, but think I'm missing something. If anyone can help I'd appreciate it.

OA is A
Top
Source: — Data Sufficiency |
Legendary Member
Posts: 2467
Joined: Thu Aug 28, 2008 6:14 pm
Thanked: 331 times
Followed by:11 members

by cramya » Sat Nov 08, 2008 9:50 am
https://www.beatthegmat.com/mgmat-4-t11194.html

I am also trying to understand how "half the rate for non vegetarian part" i.e how this translates to 4/3.

This is the essence to the whole problem...
Top
Senior | Next Rank: 100 Posts
Posts: 76
Joined: Sun Jul 20, 2008 10:47 am
Location: new york city
Thanked: 1 times

by mberkowitz » Sat Nov 08, 2008 10:08 am
ty sir
Top
Senior | Next Rank: 100 Posts
Posts: 76
Joined: Sun Jul 20, 2008 10:47 am
Location: new york city
Thanked: 1 times

by mberkowitz » Sat Nov 08, 2008 10:36 am
I think this is a great example of why relying too heavily on one technique, and not maintaining flexibility can be dangerous on this test. I made the mistake of relying on mgmat's overlapping set technique, while thinking about this problem conceptually (and writing out the given information) is probably more affective for the average joe like me.
Top
User avatar
Legendary Member
Posts: 2134
Joined: Mon Oct 20, 2008 11:26 pm
Thanked: 237 times
Followed by:25 members
GMAT Score:730

by logitech » Sat Nov 08, 2008 11:19 am
cramya wrote:https://www.beatthegmat.com/mgmat-4-t11194.html

I am also trying to understand how "half the rate for non vegetarian part" i.e how this translates to 4/3.

This is the essence to the whole problem...
Cramya, first of all - I am sure one of those SC freaks get involved in the preparation of this problem :x

The question gives us:

(V-)(S-) = 15

Statement 1

The vegetarians attended the party at a rate of 2 students to every 3 non-students, half the rate for non-vegetarians.

V+/ Total(S-) OR V+/(V+S-)

This makes all the difference, but SUPRISINGLY the statement means the latter one.

So ;

V+S+/(V+S-) = 2/3 = 1/2 (V-S+)/(V-S-)

So this where we come up with 4/3

(V-S+)/(V-S-) = 22/3

V-S+ / 15 = 4/3

V-S+ =20

So V = (V-S+) + ( V-S-) = 20+15 = 35, which is half of the bustards, so 70

This supposed to be a math question, not a word puzzle.
LGTCH
---------------------
"DON'T LET ANYONE STEAL YOUR DREAM!"
Top
User avatar
Senior | Next Rank: 100 Posts
Posts: 48
Joined: Sun Sep 28, 2008 3:59 pm
Location: Miami, FL
Thanked: 2 times
Followed by:1 members
GMAT Score:760

by praneeth » Sun Nov 09, 2008 8:23 am
logitech wrote:
cramya wrote:https://www.beatthegmat.com/mgmat-4-t11194.html

I am also trying to understand how "half the rate for non vegetarian part" i.e how this translates to 4/3.

This is the essence to the whole problem...
Cramya, first of all - I am sure one of those SC freaks get involved in the preparation of this problem :x

The question gives us:

(V-)(S-) = 15

Statement 1

The vegetarians attended the party at a rate of 2 students to every 3 non-students, half the rate for non-vegetarians.

V+/ Total(S-) OR V+/(V+S-)

This makes all the difference, but SUPRISINGLY the statement means the latter one.

So ;

V+S+/(V+S-) = 2/3 = 1/2 (V-S+)/(V-S-)

So this where we come up with 4/3

(V-S+)/(V-S-) = 22/3

V-S+ / 15 = 4/3

V-S+ =20

So V = (V-S+) + ( V-S-) = 20+15 = 35, which is half of the bustards, so 70

This supposed to be a math question, not a word puzzle.
Totally agree, wording is way to convoluted in the question, almost a critical reasoning (2 min) problem just to understand the question.
Top
Post new topic Post Reply
• Page 1 of 1