Last visit was: 11 Sep 2024, 08:41 It is currently 11 Sep 2024, 08:41
Decision Tracker
My Rewards
Unanswered
Active Topics
New posts
New comers' posts
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel

During a sale, for each shirt that Mark purchased at the regular price

SORT BY:
Date
Kudos
Tags:
Find Similar Topics 
Show Tags
Hide Tags
User avatar
sondenso
Director
Director
Joined: 04 May 2006
Posts: 862
Own Kudos [?]: 6966 [24]
Given Kudos: 1
Concentration: Finance
Schools:CBS, Kellogg
Send PM
During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   09 Jun 2008, 00:59
1
Kudos
23
Bookmarks
00:00
A
B
C
D
E

Difficulty:

15% (low)

Question Stats:

80% (01:22) correct 20% (01:34) wrong based on 843 sessions
Hide Show DIFFICULTY AND TIMER STATISTICS
During a sale, for each shirt that Mark purchased at the regular price, he also purchased a shirt at half the regular price. How many shirts did Mark purchase during the sale?

(1) The regular price of each of the shirts that Mark purchased during the sale was $21.50.
(2) The total of the prices for all the shirts that Mark purchased during the sale was $129.00.
ShowHide Answer
Official Answer
C
User avatar
prasannar
Senior Manager
Senior Manager
Joined: 05 Jan 2008
Posts: 352
Own Kudos [?]: 3753 [0]
Given Kudos: 0
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   09 Jun 2008, 01:54
C for me

How many shirts did Mark purchase during the sale?


We need the total amount/ unit price= #

Stmt-> (1) The regular price of each of the shirts that Mark purchased during the sale was $21.50. Insuff

(2) The total of the prices for all the shirts that Mark purchased during the sale was $129.00.
Stmt-2 insufficient since we have two unknowns

combining 1&2 we can solve the problem thus C
User avatar
vd
Manager
Manager
Joined: 29 Aug 2005
Posts: 135
Own Kudos [?]: 277 [0]
Given Kudos: 0
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   09 Jun 2008, 02:11
I think C is the only straight forward answer here
what is the OA for this one
User avatar
sondenso
Director
Director
Joined: 04 May 2006
Posts: 862
Own Kudos [?]: 6966 [1]
Given Kudos: 1
Concentration: Finance
Schools:CBS, Kellogg
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   09 Jun 2008, 02:22
1
Kudos
vdhawan1 wrote:
I think C is the only straight forward answer here
what is the OA for this one


prasannar wrote:
C for me

How many shirts did Mark purchase during the sale?


We need the total amount/ unit price= #

Stmt-> (1) The regular price of each of the shirts that Mark purchased during the sale was $21.50. Insuff

(2) The total of the prices for all the shirts that Mark purchased during the sale was $129.00.
Stmt-2 insufficient since we have two unknowns

combining 1&2 we can solve the problem thus C


With your general reasoning and with my work already overload :-D , I still not figure out the OA!

Here is my reasoning:

1. x is number of shirts she buy with regular price
2. y is number of shirts she buy with 1/2 regular price.

Question asks x+y=?

So, from statement1: x*21.5 +y*21.5/2 =...? so not suff
from the statement2: x*21.5 +y*21.5/2 = 129, so stil not suff

Comebine state 1 and 2 still not help! so E, help me out what wrong with my reasoning! Thanks!
User avatar
B
kevincan
GMAT Instructor
Joined: 04 Jul 2006
Posts: 959
Own Kudos [?]: 704 [3]
Given Kudos: 6
Location: Madrid
 Q51  V50
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   09 Jun 2008, 02:29
3
Kudos
Keep in mind that x=y
User avatar
sondenso
Director
Director
Joined: 04 May 2006
Posts: 862
Own Kudos [?]: 6966 [1]
Given Kudos: 1
Concentration: Finance
Schools:CBS, Kellogg
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   09 Jun 2008, 03:14
1
Kudos
kevincan wrote:
Keep in mind that x=y


sondenso wrote:
each shirt that Mark purchased at the regular price, he also purchased a shirt at half the regular price.


Why do you think that x=y?
User avatar
prasannar
Senior Manager
Senior Manager
Joined: 05 Jan 2008
Posts: 352
Own Kudos [?]: 3753 [0]
Given Kudos: 0
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   09 Jun 2008, 04:18
Quote:
regular price, he also purchased a shirt at half the regular price
assuming that Mark purchased a shirt for $X he also purchased a shirt for $X/2 if the regular price means different prices then it has to be E.
User avatar
chengliu
Intern
Intern
Joined: 29 Mar 2006
Posts: 15
Own Kudos [?]: 12 [3]
Given Kudos: 0
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   09 Jun 2008, 08:56
3
Kudos
Answer should be C

p = price of shirt
x = quantity of shirt purchased
we know that for each reg price shirt purchased, there was a purchase of one half priced shirt

px+ 1/2px = 129

px(1+1/2) = 129
px = 86

we know p=21.50

we can solve for x
avatar
JovanneMBA
Intern
Intern
Joined: 02 Jun 2008
Posts: 10
Own Kudos [?]: 2 [1]
Given Kudos: 0
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   09 Jun 2008, 09:19
1
Bookmarks
I agree that C is the answer.

From (1) we know that the price of 1 shirt at full price is $21.50.

From the question stem, we know that with each purchase of 1 full price shirt, there is an additional purchase of a half-priced shirt at $10.75.

From (2) we know that the total amount spent on shirts was $129.00.

Set-up:

Note: x is the total number of shirts purchased at a given price point

21.5x +10.75x = 129
32.25x = 129
x = 4

So we know that 4 shirts were purchased at each of the two price points, resulting in the total purchase of 8 shirts.
User avatar
B
jallenmorris
VP
VP
Joined: 30 Apr 2008
Posts: 1229
Own Kudos [?]: 954 [1]
Given Kudos: 32
Location: Oklahoma City
Concentration: Life
Schools:Hard Knocks
 Q47  V42
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   09 Jun 2008, 09:21
1
Kudos
I came up with C for the answer too, but also see the point made by a previous post.

The question does not say the 1/2 price shirt is of the same value. If it was a typical sale where you buy 1 shirt at regular price, get one of equal or lesser value for 1/2 price, then you don't know for sure that every 1/2 price shirt was the same original price as the shirt bought at full price.
User avatar
B
kevincan
GMAT Instructor
Joined: 04 Jul 2006
Posts: 959
Own Kudos [?]: 704 [0]
Given Kudos: 6
Location: Madrid
 Q51  V50
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   09 Jun 2008, 10:45
Doesn't (1) say so?
User avatar
B
jallenmorris
VP
VP
Joined: 30 Apr 2008
Posts: 1229
Own Kudos [?]: 954 [0]
Given Kudos: 32
Location: Oklahoma City
Concentration: Life
Schools:Hard Knocks
 Q47  V42
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   09 Jun 2008, 11:07
kevincan,

You're right, 1 does say that the regular price for each shirt purchased was $21.50. In order to figure out the number of shirts purchased, we need the amount each shirt sold for originally (provided), the ratio of regular price to on-sale shirts (provided) and the total amount (not provided).

We cannot approach #2 with the knowledge of #1 until we're trying to determine if both together work. #2 tells us the total amount, but nothing as to the regular price for each shirt.

When combining the information, then we get C for the reason(s) you mentioned.

kevincan wrote:
Doesn't (1) say so?
avatar
fozzzy
Director
Director
Joined: 29 Nov 2012
Posts: 575
Own Kudos [?]: 6236 [0]
Given Kudos: 543
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   25 Feb 2013, 04:06
What's the official answer for this question?
User avatar
L
KarishmaB
Tutor
Joined: 16 Oct 2010
Posts: 15297
Own Kudos [?]: 67978 [0]
Given Kudos: 442
Location: Pune, India
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   25 Feb 2013, 20:47
Expert Reply
fozzzy wrote:
What's the official answer for this question?


The answer here is (C) and not (E).

(1) The regular price of each of the shirts that Mark purchased during the sale was $21.50.

Statement 1 clearly tells you that the regular price of every shirt that he purchased (whether he purchased it at regular price or half price) is $21.50. There is no reason to assume that the regular price of shirts he purchased at half price might be different. The statement tells you that regular price of every shirt he took with him is $21.50.
User avatar
B
Shrey1
Intern
Intern
Joined: 20 Jan 2024
Posts: 32
Own Kudos [?]: 12 [0]
Given Kudos: 21
GMAT Focus 1:
655 Q86 V81 DI80 (Online)
GMAT 1: 660 Q49 V31
Send PM
Re: During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   30 May 2024, 04:29
Assuming the shirts purchased at regular price is X and shirts purchased for 50% discount is Y.

Statements 1 & 2 are clearly insufficient.

Solving both statements together gives us the -

X + Y/2 = 129/21.5 = 6

From this, the values we can get are X=3, Y=6 & X=4, Y=4 & X=2 & Y=8. So, there is not a definite value for the total number of shirts bought by Mark.

That's why I would go with E.

KarishmaB am I missing something here?
User avatar
L
KarishmaB
Tutor
Joined: 16 Oct 2010
Posts: 15297
Own Kudos [?]: 67978 [1]
Given Kudos: 442
Location: Pune, India
Send PM
During a sale, for each shirt that Mark purchased at the regular price [#permalink] During a sale, for each shirt that Mark purchased at the regular price   30 May 2024, 22:43
1
Kudos
Expert Reply
Shrey1

X must be equal to Y. We are given that for each shirt he bought at regular price, he bought one at half price. So if he bought X shirts are regular price, he bought the same X shirts at half price. It is a sale - buy one shirt at regular price, get another at half price. You cannot buy shirts just at half price without buying one at regular price. You are expected to understand this from context. ­
GMAT Club Bot
gmatclubot
During a sale, for each shirt that Mark purchased at the regular price [#permalink]
30 May 2024, 22:43