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

 It is currently 04 Jul 2015, 01:19

### 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

# 4% of population of country L has military experience and

Author Message
TAGS:
Senior Manager
Joined: 20 Dec 2004
Posts: 257
Followers: 6

Kudos [?]: 84 [1] , given: 0

4% of population of country L has military experience and [#permalink]  18 Feb 2008, 10:33
1
KUDOS
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
4% of population of country L has military experience and supports a war against Country G. If 20% of those who support the war have no military experience what percentage of the country's population actually supports war against G?

* 5%
* 7.5%
* 10%
* 12.5%
* 15%

Folks pls help. I am lost with these kind of problems...consistently getting them wrong.

Are there any good threads out there providing generic approach to such problems...
_________________

Stay Hungry, Stay Foolish

Manager
Joined: 02 Jan 2008
Posts: 159
Followers: 2

Kudos [?]: 71 [2] , given: 0

Re: PS: Percentages. [#permalink]  18 Feb 2008, 10:46
2
KUDOS
=========================================
============support========do not support====
=========================================
Military---------4------------------____-------------
=========================================
Non Military----20x/100------------____-------------
=========================================
Total:-----------x----------------------------------
=========================================

x = 20x/100 + 4; 80x/100=4; x=5
SVP
Joined: 28 Dec 2005
Posts: 1579
Followers: 2

Kudos [?]: 91 [1] , given: 2

Re: PS: Percentages. [#permalink]  18 Feb 2008, 16:58
1
KUDOS
probably best to do a tree diagram or a double matrix.

Four columns .... support and dont support, and military and non military

military and support = 4

non military and support = 0.2x, where x=total of all the supporters

therefore, 4+0.2x=x --> x=5
Senior Manager
Joined: 06 Jul 2006
Posts: 295
Location: SFO Bay Area
Schools: Berkeley Haas
Followers: 2

Kudos [?]: 38 [1] , given: 0

Re: PS: Percentages. [#permalink]  19 Feb 2008, 00:31
1
KUDOS
A. 5%.

Assume X is the total % is supporters.
0.2 X = X - 4
4= 0.8 X => X = 5%
Director
Joined: 14 Sep 2007
Posts: 908
Schools: Kellogg '10
Followers: 6

Kudos [?]: 87 [1] , given: 15

Re: PS: Percentages. [#permalink]  19 Feb 2008, 11:01
1
KUDOS
Military supporters, who make up 80% of the total supporters, make up 4% of the total population. There are 1/4th the number of non-military supporters as there are military supporters. Military supporters make up 4% of the total. A quarter of this is 1%. 1 + 4 = 5.
_________________
Re: PS: Percentages.   [#permalink] 19 Feb 2008, 11:01
Similar topics Replies Last post
Similar
Topics:
1 If the population of a certain country increases at the rate 6 09 Jun 2014, 05:45
8 4% of the population of a certain country owns both a car an 12 16 Jul 2011, 07:55
1 4% of population of country L has military experience and supports a w 2 30 Mar 2010, 20:25
4% of the population of country L has military experience 4 27 Sep 2006, 08:34
Display posts from previous: Sort by