Jim made $80 in 3 weeks. 1st weeks savings = 1/2 of week : PS Archive Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack  It is currently 21 Jan 2017, 21:19 ### 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 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. ### Request Expert Reply # Events & Promotions ###### Events & Promotions in June Open Detailed Calendar # Jim made$80 in 3 weeks. 1st weeks savings = 1/2 of week

Author Message
CEO
Joined: 21 Jan 2007
Posts: 2756
Location: New York City
Followers: 11

Kudos [?]: 855 [0], given: 4

Jim made $80 in 3 weeks. 1st weeks savings = 1/2 of week [#permalink] ### Show Tags 15 Oct 2007, 12:46 00:00 Difficulty: (N/A) Question Stats: 0% (00:00) correct 0% (00:00) wrong based on 0 sessions ### HideShow timer Statistics 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
Joined: 08 Jun 2007
Posts: 583
Followers: 2

Kudos [?]: 97 [0], given: 0

### Show Tags

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 Joined: 31 Mar 2007 Posts: 585 Location: Canada eh Followers: 9 Kudos [?]: 64 [0], given: 0 ### Show Tags 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 Joined: 09 Jul 2007 Posts: 1104 Location: London Followers: 6 Kudos [?]: 103 [0], given: 0 Re: PS algebra [#permalink] ### Show Tags 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
Joined: 03 May 2007
Posts: 886
Schools: University of Chicago, Wharton School
Followers: 6

Kudos [?]: 190 [0], given: 7

### Show Tags

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 Joined: 21 Jan 2007 Posts: 2756 Location: New York City Followers: 11 Kudos [?]: 855 [0], given: 4 Re: PS algebra [#permalink] ### Show Tags 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
Joined: 03 May 2007
Posts: 886
Schools: University of Chicago, Wharton School
Followers: 6

Kudos [?]: 190 [0], given: 7

### Show Tags

21 Oct 2007, 20:47
bmwhype2 wrote:
Fistail wrote:
bmwhype2 wrote: