It is currently 25 Jun 2017, 22:54

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

If Jim saved a total of $90 in three weeks, how much did he  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics Author Message Intern Joined: 30 Apr 2010 Posts: 24 Location: Texas Schools: University of Texas - TEMBA If Jim saved a total of$90 in three weeks, how much did he [#permalink]

Show Tags

05 May 2010, 13:14
00:00

Difficulty:

(N/A)

Question Stats:

46% (01:30) correct 54% (00:22) wrong based on 36 sessions

HideShow timer Statistics

If Jim saved a total of $90 in three weeks, how much did he save in week 2? 1. Jim’s average savings for the first 2 weeks were$20

2. Jim’s first week’s savings were half of his savings in week 2 and a third of his savings in week 3

A. 1 alone is Sufficient
B. 2 alone is Sufficient
C. Statements together are Sufficient
D. Each alone is Sufficient
E. Neither is Sufficient

The answer is B

Even though I got the correct answer, what I don’t understand is how statement one is true. Statement 1 should say “Jim’s average savings for the first 2 weeks were $22.50” not “Jim’s average savings for the first 2 weeks were$20.” Am I’m missing something?

1 is not sufficient. S1 + S2 = 40. Although S3 can be calculated, the value of S2 cannot be calculated. Consider S1 = 20 and S2 = 20 or S1 = 5 and S2 = 35

2 is sufficient. S2 = 2*S1 and S3 = 3*S1

S1 + 2*S1 + s*S1 = $90 6*S1 =$90

S1 = $15 S2 =$30

I found this question on the MBA Toolkit App: Hard 700+ GMAT Quantitative Questions from GMAT Club Tests.
Senior Manager
Joined: 01 Feb 2010
Posts: 264
Re: How much did Jim save in week 2? [#permalink]

Show Tags

05 May 2010, 21:59
TXTDryFly wrote:
If Jim saved a total of $90 in three weeks, how much did he save in week 2? 1. Jim’s average savings for the first 2 weeks were$20

2. Jim’s first week’s savings were half of his savings in week 2 and a third of his savings in week 3

A. 1 alone is Sufficient
B. 2 alone is Sufficient
C. Statements together are Sufficient
D. Each alone is Sufficient
E. Neither is Sufficient

The answer is B

Even though I got the correct answer, what I don’t understand is how statement one is true. Statement 1 should say “Jim’s average savings for the first 2 weeks were $22.50” not “Jim’s average savings for the first 2 weeks were$20.” Am I’m missing something?

1 is not sufficient. S1 + S2 = 40. Although S3 can be calculated, the value of S2 cannot be calculated. Consider S1 = 20 and S2 = 20 or S1 = 5 and S2 = 35

2 is sufficient. S2 = 2*S1 and S3 = 3*S1

S1 + 2*S1 + s*S1 = $90 6*S1 =$90

S1 = $15 S2 =$30

I found this question on the MBA Toolkit App: Hard 700+ GMAT Quantitative Questions from GMAT Club Tests.

I didn't get your point here "Even though I got the correct answer, what I don’t understand is how statement one is true. Statement 1 should say “Jim’s average savings for the first 2 weeks were $22.50” not “Jim’s average savings for the first 2 weeks were$20.” Am I’m missing something? "
1 is not not sufficient as explained by you and 2 is sufficient again as explained by you.
And correct answer is B which means "only II is sufficient to answer alone and 1 is not sufficient to answer alone".
Math Expert
Joined: 02 Sep 2009
Posts: 39678
Re: How much did Jim save in week 2? [#permalink]

Show Tags

05 May 2010, 22:23
TXTDryFly wrote:
If Jim saved a total of $90 in three weeks, how much did he save in week 2? 1. Jim’s average savings for the first 2 weeks were$20

2. Jim’s first week’s savings were half of his savings in week 2 and a third of his savings in week 3

The answer is B

Even though I got the correct answer, what I don’t understand is how statement one is true. Statement 1 should say “Jim’s average savings for the first 2 weeks were $22.50” not “Jim’s average savings for the first 2 weeks were$20.” Am I’m missing something?

1 is not sufficient. S1 + S2 = 40. Although S3 can be calculated, the value of S2 cannot be calculated. Consider S1 = 20 and S2 = 20 or S1 = 5 and S2 = 35

2 is sufficient. S2 = 2*S1 and S3 = 3*S1

S1 + 2*S1 + s*S1 = $90 6*S1 =$90

S1 = $15 S2 =$30

I found this question on the MBA Toolkit App: Hard 700+ GMAT Quantitative Questions from GMAT Club Tests.

Yes, you are right. Statements contradict, which never happens in real GMAT questions.

If statement (1) were "Jim’s average savings for the first 2 weeks were $22.5$" (as you suggested), then there would be no problem with this question.
_________________
Intern
Joined: 30 Apr 2010
Posts: 24
Location: Texas
Schools: University of Texas - TEMBA
Re: How much did Jim save in week 2? [#permalink]

Show Tags

06 May 2010, 09:08
bangalorian2000 wrote:
TXTDryFly wrote:
If Jim saved a total of $90 in three weeks, how much did he save in week 2? 1. Jim’s average savings for the first 2 weeks were$20

2. Jim’s first week’s savings were half of his savings in week 2 and a third of his savings in week 3

A. 1 alone is Sufficient
B. 2 alone is Sufficient
C. Statements together are Sufficient
D. Each alone is Sufficient
E. Neither is Sufficient

The answer is B

Even though I got the correct answer, what I don’t understand is how statement one is true. Statement 1 should say “Jim’s average savings for the first 2 weeks were $22.50” not “Jim’s average savings for the first 2 weeks were$20.” Am I’m missing something?

1 is not sufficient. S1 + S2 = 40. Although S3 can be calculated, the value of S2 cannot be calculated. Consider S1 = 20 and S2 = 20 or S1 = 5 and S2 = 35

2 is sufficient. S2 = 2*S1 and S3 = 3*S1

S1 + 2*S1 + s*S1 = $90 6*S1 =$90

S1 = $15 S2 =$30

I found this question on the MBA Toolkit App: Hard 700+ GMAT Quantitative Questions from GMAT Club Tests.

I didn't get your point here "Even though I got the correct answer, what I don’t understand is how statement one is true. Statement 1 should say “Jim’s average savings for the first 2 weeks were $22.50” not “Jim’s average savings for the first 2 weeks were$20.” Am I’m missing something? "
1 is not not sufficient as explained by you and 2 is sufficient again as explained by you.
And correct answer is B which means "only II is sufficient to answer alone and 1 is not sufficient to answer alone".

My point was that DS statements are always true. Statement #1 is not true.
Manager
Affiliations: The Earth organization, India
Joined: 25 Dec 2010
Posts: 191
WE 1: SAP consultant-IT 2 years
WE 2: Entrepreneur-family business 2 years
Re: How much did Jim save in week 2? [#permalink]

Show Tags

04 Jun 2011, 02:10
even I found this Q on gmat club app on my iphone, please make the corrections
_________________

Cheers !!

Quant 47-Striving for 50
Verbal 34-Striving for 40

Manager
Joined: 05 Jul 2010
Posts: 193
Re: How much did Jim save in week 2? [#permalink]

Show Tags

04 Jun 2011, 11:49
yes, the question needs modification.
Director
Joined: 01 Feb 2011
Posts: 755
Re: How much did Jim save in week 2? [#permalink]

Show Tags

04 Jun 2011, 16:13
Yes. This problem needs correction. Even though we can arrive at the answer , it gives two contradictory statements which will never happen in GMAT.

From the statement 2 and stem we can find the first , second and third weeks savings as 15,30 and 45
respectively. And that makes the average of first two weeks 22.5 which contradicts with statement 1

first statement needs to say something like this...

1. the average of first and second weeks average is 22.5
Math Forum Moderator
Joined: 20 Dec 2010
Posts: 2010
Re: How much did Jim save in week 2? [#permalink]

Show Tags

04 Jun 2011, 16:49
Spidy001 wrote:
Yes. This problem needs correction. Even though we can arrive at the answer , it gives two contradictory statements which will never happen in GMAT.

From the statement 2 and stem we can find the first , second and third weeks savings as 15,30 and 45
respectively. And that makes the average of first two weeks 22.5 which contradicts with statement 1

first statement needs to say something like this...

1. the average of first and second weeks average is 22.5

Concern acknowledged. Necessary action will be taken to rectify the discrepancy.
_________________
VP
Status: There is always something new !!
Affiliations: PMI,QAI Global,eXampleCG
Joined: 08 May 2009
Posts: 1326
Re: How much did Jim save in week 2? [#permalink]

Show Tags

06 Jun 2011, 03:41
b x1= 0.5x2 = 0.33x3
where x1,x2 and x3 are the respective savings for the weeks.

thus x1+x2+x3 = 90 in this x1 can be found out.

B it is.
_________________

Visit -- http://www.sustainable-sphere.com/
Promote Green Business,Sustainable Living and Green Earth !!

Re: How much did Jim save in week 2?   [#permalink] 06 Jun 2011, 03:41
Display posts from previous: Sort by

If Jim saved a total of \$90 in three weeks, how much did he

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 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®.