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

It is currently 29 Aug 2015, 09:46
GMAT Club Tests

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

Jim made $80 in 3 weeks. 1st weeks savings = 1/2 of week

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
CEO
CEO
User avatar
Joined: 21 Jan 2007
Posts: 2760
Location: New York City
Followers: 9

Kudos [?]: 420 [0], given: 4

Jim made $80 in 3 weeks. 1st weeks savings = 1/2 of week [#permalink] New post 15 Oct 2007, 12:46
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Jim made $80 in 3 weeks.
1st weeks savings = 1/2 of week two's savings
1st weeks savings = 1/3 of week three's savings

how do i set this up algebraically to solve for earnings in week 2?
Director
Director
User avatar
Joined: 08 Jun 2007
Posts: 584
Followers: 2

Kudos [?]: 81 [0], given: 0

Re: PS algebra [#permalink] New post 15 Oct 2007, 13:01
bmwhype2 wrote:
Jim made $80 in 3 weeks.
1st weeks savings = 1/2 of week two's savings
1st weeks savings = 1/3 of week three's savings

how do i set this up algebraically to solve for earnings in week 2?


Assume x y z for three weeks

x = y/2
x = z/3 => z = 3y/2

x + y + z = 80

y/2 + y + 3y/2 = 80
Director
Director
User avatar
Joined: 31 Mar 2007
Posts: 586
Location: Canada eh
Followers: 7

Kudos [?]: 47 [0], given: 0

 [#permalink] New post 15 Oct 2007, 15:36
I did it the same way

usually just start assigning variables right away and write out as many equations as you can then see if you can work anything out

so what i'd do is instantly go 3 weeks boom X,Y,Z

now X+Y+Z = 80

X=1/2Y
X=1/3Z

solving for Y so plug in X=1/2Y into your original equation

so you have 1/2Y + Y + Z = 80

now to get Z interms of Y, observe two formulas, set them equal...

1/2Y = 1/3Z

multiply out by 3

3/2Y = Z

sub it back in

1/2Y + Y + 3/2Y = 80

3Y = 80
Y = 26.66... ~= 26.67


so just set up as many equations asap then work it out
VP
VP
User avatar
Joined: 09 Jul 2007
Posts: 1105
Location: London
Followers: 6

Kudos [?]: 78 [0], given: 0

Re: PS algebra [#permalink] New post 15 Oct 2007, 19:32
bmwhype2 wrote:
Jim made $80 in 3 weeks.
1st weeks savings = 1/2 of week two's savings
1st weeks savings = 1/3 of week three's savings

how do i set this up algebraically to solve for earnings in week 2?


x y and z

x
x=1/2y----> y=2x
x=1/3z-----> z=3x

x+2x+3x=80
6x=80
x=40/3

y=2*40/3
Director
Director
User avatar
Joined: 03 May 2007
Posts: 888
Schools: University of Chicago, Wharton School
Followers: 6

Kudos [?]: 86 [0], given: 7

Re: PS algebra [#permalink] New post 15 Oct 2007, 21:31
bmwhype2 wrote:
Jim made $80 in 3 weeks.
1st weeks savings = 1/2 of week two's savings
1st weeks savings = 1/3 of week three's savings

how do i set this up algebraically to solve for earnings in week 2?


not solvable...


May be you mean earnings = savings. hmmmm savings cannot be equal to earnings.

can you make sure that the question is not so vauge?
CEO
CEO
User avatar
Joined: 21 Jan 2007
Posts: 2760
Location: New York City
Followers: 9

Kudos [?]: 420 [0], given: 4

Re: PS algebra [#permalink] New post 21 Oct 2007, 20:16
Fistail wrote:
bmwhype2 wrote:
Jim made $80 in 3 weeks.
1st weeks savings = 1/2 of week two's savings
1st weeks savings = 1/3 of week three's savings

how do i set this up algebraically to solve for earnings in week 2?


not solvable...


May be you mean earnings = savings. hmmmm savings cannot be equal to earnings.

can you make sure that the question is not so vauge?


lol. sorry. should have picked that up, being that i am a banker.
Director
Director
User avatar
Joined: 03 May 2007
Posts: 888
Schools: University of Chicago, Wharton School
Followers: 6

Kudos [?]: 86 [0], given: 7

Re: PS algebra [#permalink] New post 21 Oct 2007, 20:47
bmwhype2 wrote:
Fistail wrote:
bmwhype2 wrote:
Jim made $80 in 3 weeks.
1st weeks savings = 1/2 of week two's savings
1st weeks savings = 1/3 of week three's savings

how do i set this up algebraically to solve for earnings in week 2?


not solvable...


May be you mean earnings = savings. hmmmm savings cannot be equal to earnings.

can you make sure that the question is not so vauge?


lol. sorry. should have picked that up, being that i am a banker.



Okie. not a problem.

read this one after 2 years (in 2009): i am also a banker. :wink:
Re: PS algebra   [#permalink] 21 Oct 2007, 20:47
Display posts from previous: Sort by

Jim made $80 in 3 weeks. 1st weeks savings = 1/2 of week

  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®.