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

It is currently 22 Sep 2014, 06:49

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

If #p# = ap3+ bp – 1............

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 11 Aug 2009
Posts: 129
Followers: 1

Kudos [?]: 20 [0], given: 3

GMAT Tests User
If #p# = ap3+ bp – 1............ [#permalink] New post 18 Nov 2009, 20:44
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

100% (00:00) correct 0% (00:00) wrong based on 5 sessions
If #p# = ap3+ bp – 1 where a and b are constants, and #-5# = 3, what is the value of #5#?
5
0
-2
-3
-5
Manager
Manager
avatar
Joined: 28 Jul 2009
Posts: 127
Followers: 2

Kudos [?]: 10 [0], given: 12

Re: If #p# = ap3+ bp – 1............ [#permalink] New post 18 Nov 2009, 21:39
From the given equation,
-125a-5b=4
==> 125a+25b= -4 ....................... (1)

Now we have to find #5#

#5#= 125a+25b -1
From (1)
#5# = -4 -1 = -5

I hope I did it right.
Manager
Manager
User avatar
Joined: 13 Aug 2009
Posts: 204
Schools: Sloan '14 (S)
Followers: 3

Kudos [?]: 75 [0], given: 16

GMAT Tests User
Re: If #p# = ap3+ bp – 1............ [#permalink] New post 19 Nov 2009, 03:33
If #p# = ap3+ bp – 1 where a and b are constants, then we can simply this equation further:

#p# = ap3+ bp – 1
#p# = p*(a3+ b) – 1
And let (a3+b) equal some constant C:
#p# = p*(C) – 1

#-5# = 3 = -5*(C)-1
C=-4/5

#5# = 5*(-4/5)-1
#5# -5

ANSWER: E. -5
Re: If #p# = ap3+ bp – 1............   [#permalink] 19 Nov 2009, 03:33
    Similar topics Author Replies Last post
Similar
Topics:
If #p# = ap^3+ bp – 1 where a and b are constants Stiv 0 17 Aug 2013, 10:42
3 Experts publish their posts in the topic If #p# = ap^3+ bp – 1 where a and b are constants, and #-5# tonebeeze 7 06 Oct 2010, 09:55
1 CR-BP spriya 8 19 Jul 2008, 10:07
Experts publish their posts in the topic If P# = p/(p-1), what is the value of p##? p/(p-1) 1/p p 2-p bmwhype2 2 22 Nov 2007, 14:26
If P# =P/P-1 what is P##? P/(P-1) 1/P P 2 - P P anonymousegmat 3 23 Jun 2007, 13:29
Display posts from previous: Sort by

If #p# = ap3+ bp – 1............

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.