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

It is currently 22 Jan 2019, 19:49

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.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
  • The winners of the GMAT game show

     January 22, 2019

     January 22, 2019

     10:00 PM PST

     11:00 PM PST

    In case you didn’t notice, we recently held the 1st ever GMAT game show and it was awesome! See who won a full GMAT course, and register to the next one.
  • Key Strategies to Master GMAT SC

     January 26, 2019

     January 26, 2019

     07:00 AM PST

     09:00 AM PST

    Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.

In the table above is shown the percent reduction in the

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

Hide Tags

 
Manager
Manager
avatar
Joined: 21 May 2011
Posts: 204
In the table above is shown the percent reduction in the  [#permalink]

Show Tags

New post 23 Jul 2011, 20:12
3
16
00:00
A
B
C
D
E

Difficulty:

  95% (hard)

Question Stats:

38% (01:47) correct 62% (01:54) wrong based on 441 sessions

HideShow timer Statistics

Date of Purchase
Percent Reduction

July 1 through July 7
5%

July 8 through July 14
30%

July 15 through July 21
55%

July 22 through July 28
70%

In the table above is shown the percent reduction in the price of every item in a store off the original price of that item on June 30 of that year. The table is for the 28 days immediately after June 30 of that year. If on July n of that year, Bill bought a suit that originally cost $450, what is the value of n?

(1) Bill paid $112.50 less than he would have if he had bought it the day before.

(2) Bill paid $202.50 for the suit.
Most Helpful Community Reply
Manager
Manager
avatar
Joined: 21 May 2011
Posts: 204
Re: DS - 700 level - Suit  [#permalink]

Show Tags

New post 23 Jul 2011, 20:54
8
fluke,

You really don't have to solve this and waste the precious time. Think about it strategically.

From 1) if Bill paid $112.5 less than the price a day before, he basically saved 25% on the suit. So it could either be July 8th or July 15th. Hence, eliminate A and D.

From 2) if Bill paid $202.5 for the suit, you can figure out the week that particular sale price was on, but not the exact date. Hence, eliminate B.

If both are true, it is easy to just pick the date which falls within the week from 2). Hence, C is correct.

No math is required except 112.5/450 which is easy 25%.

Hope this helps you.
General Discussion
Senior Manager
Senior Manager
avatar
Joined: 24 Mar 2011
Posts: 354
Location: Texas
Re: DS - 700 level - Suit  [#permalink]

Show Tags

New post 23 Jul 2011, 20:27
interesting question..

i think i will choose A for this... only statement 1 is sufficient...

how i solved?
B - of course is sufficient.. $202.50 .. falls under 3rd category BUT i dont know which day in 3rd category.. it can be any from july 15th through 21st...

now for A to be correct there is hint... to see if 55% of 450 - 30% of 450 = 112.50 and i think it is.
so it is the 15th day of july
Retired Moderator
avatar
Joined: 20 Dec 2010
Posts: 1810
Re: DS - 700 level - Suit  [#permalink]

Show Tags

New post 23 Jul 2011, 20:40
5
3
bschool83 wrote:
Date of Purchase
Percent Reduction

July 1 through July 7
5%

July 8 through July 14
30%

July 15 through July 21
55%

July 22 through July 28
70%


In the table above is shown the percent reduction in the price of every item in a store off the original price of that item on June 30 of that year. The table is for the 28 days immediately after June 30 of that year. If on July n of that year, Bill bought a suit that originally cost $450, what is the value of n?

(1) Bill paid $112.50 less than he would have if he had bought it the day before.

(2) Bill paid $202.50 for the suit.


Can't do much about it except solving:
1)
450*0.95=427.5
450*0.7=315
450*0.45=202.5
450*0.3=135.0

427.5-315=112.5 => n=8
315-202.5=112.5 => n=15
Not Sufficient.

2)

15<=n<=21
Not Sufficient.

Together:
n=15

Ans: "C"
_________________

~fluke

GMAT Club Premium Membership - big benefits and savings

Manhattan Prep Instructor
User avatar
S
Joined: 22 Mar 2011
Posts: 1375
Re: DS - 700 level - Suit  [#permalink]

Show Tags

New post 23 Jul 2011, 20:49
1
Fluke is right. This is a typical DS trap. If we see that a difference of 112.50 show up at the junction of two date ranges, we figure we have the answer and start congratulating ourselves. However, it's really important to check and see if there is more than one junction where that particular difference shows up. Assume that there will be, and you can be pleasantly surprised if you're wrong!
_________________


Dmitry Farber | Manhattan GMAT Instructor | New York


Manhattan GMAT Discount | Manhattan GMAT Course Reviews | View Instructor Profile |
Manhattan GMAT Reviews

VP
VP
User avatar
P
Joined: 05 Mar 2015
Posts: 1003
Re: In the table above is shown the percent reduction in the  [#permalink]

Show Tags

New post 15 Jun 2016, 09:09
bschool83 wrote:
Date of Purchase
Percent Reduction

July 1 through July 7
5%

July 8 through July 14
30%

July 15 through July 21
55%

July 22 through July 28
70%

In the table above is shown the percent reduction in the price of every item in a store off the original price of that item on June 30 of that year. The table is for the 28 days immediately after June 30 of that year. If on July n of that year, Bill bought a suit that originally cost $450, what is the value of n?

(1) Bill paid $112.50 less than he would have if he had bought it the day before.

(2) Bill paid $202.50 for the suit.

(1) insuff..because we don't know the discounted price/any price for which he would have paid $112.5.
(2)202.5 is what percent less of 450...
450(1-x/100)=202.5
x=55%
date "n" could be anything between july15-july21...not suff....

Combining both Bill paid $112.50 less than he would have if he had bought it the day before
means bill paid (202.5+112.5=$315) if he bought with any previous discount a day before.
315 is 30% less than 450.
So he must bought on july 15
Ans C
Manager
Manager
avatar
G
Joined: 30 Mar 2017
Posts: 134
GMAT 1: 200 Q1 V1
Reviews Badge
Re: In the table above is shown the percent reduction in the  [#permalink]

Show Tags

New post 14 Jan 2018, 06:15
Algebraic approach:

Statement 1
Let \(x\) be the discount Bill received and let \(y\) be the previous period's discount. So we get this equation:
\(450(1-x) = 450(1-y) - 112.50\)
Which reduces to:
\(x-y = 0.25\)
This means that in the previous period, the discount was 25% less. Thus, Bill either bought his suit on July 8 or July 15. July 1 is not possible because there was no discount the day before. And July 22 is not possible because the discount was 15% less the day before.
Not sufficient.
Note that if the equation reduced to \(x-y = 0.15\), Statement 1 alone would have been sufficient.

Statement 2
\(202.50 = 450(1-x)\) where \(x\) is the discount Bill received.
\(x = 0.55\)
So Bill could have bought his suit on any day July 15 through July 21.
Not sufficient.

Combining both statements
In Statement 1, we narrowed down the answer to July 8 or July 15.
In Statement 2, we narrowed down the answer to July 15 through July 21.
The only date common do both is July 15.
Sufficient.
Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 9462
Premium Member
Re: In the table above is shown the percent reduction in the  [#permalink]

Show Tags

New post 17 Jan 2019, 12:58
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

GMAT Club Bot
Re: In the table above is shown the percent reduction in the &nbs [#permalink] 17 Jan 2019, 12:58
Display posts from previous: Sort by

In the table above is shown the percent reduction in the

  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®.