GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 12 Dec 2018, 17:51

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.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in December
PrevNext
SuMoTuWeThFrSa
2526272829301
2345678
9101112131415
16171819202122
23242526272829
303112345
Open Detailed Calendar
  • The winning strategy for 700+ on the GMAT

     December 13, 2018

     December 13, 2018

     08:00 AM PST

     09:00 AM PST

    What people who reach the high 700's do differently? We're going to share insights, tips and strategies from data we collected on over 50,000 students who used examPAL.
  • GMATbuster's Weekly GMAT Quant Quiz, Tomorrow, Saturday at 9 AM PST

     December 14, 2018

     December 14, 2018

     09:00 AM PST

     10:00 AM PST

    10 Questions will be posted on the forum and we will post a reply in this Topic with a link to each question. There are prizes for the winners.

If Jack's and Kate's annual salaried in 1985 were each 10 percent high

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Ryerson (Ted Rogers) Thread Master
User avatar
Joined: 27 Sep 2015
Posts: 57
Location: Canada
GMAT 1: 410 Q33 V13
WE: Management Consulting (Computer Software)
GMAT ToolKit User
If Jack's and Kate's annual salaried in 1985 were each 10 percent high  [#permalink]

Show Tags

New post 20 Dec 2015, 18:29
1
8
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

70% (00:59) correct 30% (01:06) wrong based on 214 sessions

HideShow timer Statistics

If Jack's and Kate's annual salaried in 1985 were each 10 percent higher than their respective annual salaries in 1984, what was Jack's annual salary in 1984?

(1) The sum of Jack's and Kate's annual salaries in 1984 was $50,000.
(2) The sum of Jack's and Kate's annual salaries in 1985 was $55,000.

_________________

Discipline does not mean control. Discipline means having the sense to do exactly what is needed.

Ryerson (Ted Rogers) Thread Master
User avatar
Joined: 27 Sep 2015
Posts: 57
Location: Canada
GMAT 1: 410 Q33 V13
WE: Management Consulting (Computer Software)
GMAT ToolKit User
Re: If Jack's and Kate's annual salaried in 1985 were each 10 percent high  [#permalink]

Show Tags

New post 20 Dec 2015, 18:37
Given:
Person/Year 1984 1985
Jack's Sj 1.10Sj
Kate,s Sk 1.10Sk

Statement I:
Sj + Sk = $50,000, Non sufficient

Statement II:

1.10Sj + 1.10Sk = $55,000 Non sufficient

Both Statements I and II:

SI and SII are same. If you multiply SI with 1.10, you will get SII.
Hence both statements together are also not sufficient.

E is Correct answer.
_________________

Discipline does not mean control. Discipline means having the sense to do exactly what is needed.

Intern
Intern
avatar
Joined: 28 Oct 2015
Posts: 22
Re: If Jack's and Kate's annual salaried in 1985 were each 10 percent high  [#permalink]

Show Tags

New post 27 Jan 2016, 09:23
Can someone else solve this using any other approach.
I came down to C, without going into any further calculations. I thought that from statement one we have one equation and from the second statement we have another, combining both should give us the salary of the variables. But then when I performed the calculations, after seeing answer is E, a variable cancels out and we are left with nothing. But I don't know, logically speaking, shouldn't the 2 statments suffice?

Here is what I did:
55= J+K
50= 0.9J+0.9K

50= 0.9(55-K)+0.9K; 50=-0.9K+49.5+0.9K
EMPOWERgmat Instructor
User avatar
V
Status: GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 13065
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: Q170 V170
Re: If Jack's and Kate's annual salaried in 1985 were each 10 percent high  [#permalink]

Show Tags

New post 29 Jan 2016, 22:52
Hi Nadiuska,

On DS questions, it's really important that you make sure you're answering the question that is ASKED. This prompt asks us for Jack's salary in 1984, but we're never given enough information to differentiate Jack's salary from Kate's salary.

Here are two quick examples to work through:

1) What if Jack and Kate BOTH had a salary of $25,000?
2) Now, what if Jack had a salary of $30,000 and Kate had a salary of $20,000?

You should see (either with a little bit of 'math work' or 'conceptually') that the correct answer is E.

GMAT assassins aren't born, they're made,
Rich
_________________

760+: Learn What GMAT Assassins Do to Score at the Highest Levels
Contact Rich at: Rich.C@empowergmat.com

Rich Cohen

Co-Founder & GMAT Assassin

Special Offer: Save $75 + GMAT Club Tests Free
  Official GMAT Exam Packs + 70 Pt. Improvement Guarantee
www.empowergmat.com/

*****Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!*****

Manager
Manager
avatar
S
Joined: 09 Nov 2016
Posts: 61
Location: India
Reviews Badge
Re: If Jack's and Kate's annual salaried in 1985 were each 10 percent high  [#permalink]

Show Tags

New post 30 Aug 2017, 01:42
1
Both statements give you the same equation (individually and together), which is in 2 variables. Hence its not sufficient.

Hence its straightforward E.
Director
Director
avatar
G
Joined: 19 Oct 2013
Posts: 509
Location: Kuwait
GPA: 3.2
WE: Engineering (Real Estate)
GMAT ToolKit User CAT Tests
Re: If Jack's and Kate's annual salaried in 1985 were each 10 percent high  [#permalink]

Show Tags

New post 28 Sep 2018, 12:40
Basically we are given that Jack’s and Kate’s salaries are each 10% more than the year before

Statement 1) J + K = 50,000 in 1984

No information on Jack’s salary per se.

Insufficient

Statement 2) J + K = 55,000 in 1985

No information on how we have this 55,000 could be 20,35 could be 25,30 etc..

Now combine 1 and 2

We have 10% increase in 1985 yet we cannot say if Jack’s salary in 1984 is 20,25,30 or any other number.

C is insufficient.

Answer choice E

Posted from my mobile device
GMAT Club Bot
Re: If Jack's and Kate's annual salaried in 1985 were each 10 percent high &nbs [#permalink] 28 Sep 2018, 12:40
Display posts from previous: Sort by

If Jack's and Kate's annual salaried in 1985 were each 10 percent high

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


Copyright

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

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.