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

 It is currently 30 Jun 2015, 07:18

### 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

# PS: GMATPrep 1 (growth rates)

Author Message
TAGS:
Director
Joined: 14 Sep 2007
Posts: 908
Schools: Kellogg '10
Followers: 6

Kudos [?]: 87 [0], given: 15

PS: GMATPrep 1 (growth rates) [#permalink]  13 Feb 2008, 11:05
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Can someone explain the attached? It seems easy, but I get the wrong answer. I set the formula as:

4 * (1+x)^6 = 6/5 * (4*(1+x)^4)

I don't know how to solve for X in that formula in the first place, but even if I did I'm sure it's not right.

Thanks.
Attachments

GMATPrep2 Question 31.doc [70 KiB]

_________________
Director
Joined: 12 Jul 2007
Posts: 864
Followers: 13

Kudos [?]: 224 [1] , given: 0

Re: PS: GMATPrep 1 (growth rates) [#permalink]  13 Feb 2008, 11:31
1
KUDOS
$formdata=4+6x+=\frac{6}{5}(4+4x)$

multiply through by 5

$formdata=20+30x+=+24+++24x$

$formdata=6x=4$

$formdata=x=\frac{2}{3}$

The constant amount is X feet per year, no need to raise it to powers or anything like that. Keep it simple
Director
Joined: 14 Sep 2007
Posts: 908
Schools: Kellogg '10
Followers: 6

Kudos [?]: 87 [0], given: 15

Re: PS: GMATPrep 1 (growth rates) [#permalink]  13 Feb 2008, 11:35
eschn3am wrote:
The constant amount is X feet per year, no need to raise it to powers or anything like that. Keep it simple

Argggh...

Man I dumb sometimes.

Thanks!
_________________
Re: PS: GMATPrep 1 (growth rates)   [#permalink] 13 Feb 2008, 11:35
Similar topics Replies Last post
Similar
Topics:
GMATPrep CAT1 Quant Question 1 (PS) 3 24 Aug 2009, 14:38
1 PS (gmatprep1) -- inequalities 9 02 Mar 2009, 19:47
GMAT-Prep PS1 2 17 Jan 2009, 02:47
1 PS: Circle find the minor arc? (GMATPrep 1 ) 2 02 Aug 2008, 06:42
PS- Mass and Volume rate conversions GMATPrep 1 24 Feb 2007, 15:41
Display posts from previous: Sort by