Find all School-related info fast with the new School-Specific MBA Forum

It is currently 10 Jul 2014, 10:26

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Eggs in Loach s Grocery can only be bought individually

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
GMAT Instructor
avatar
Joined: 04 Jul 2006
Posts: 1271
Location: Madrid
Followers: 23

Kudos [?]: 111 [0], given: 0

Eggs in Loach s Grocery can only be bought individually [#permalink] New post 04 Jul 2006, 07:36
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Eggs in Loach’s Grocery can only be bought individually ($0.16 each), by the half-dozen ($0.60 each carton of 6 eggs), or by the dozen ($1.00 each carton of 12 eggs). The eggs that Larry bought at Loach´s last year cost $15.00. How many cartons of eggs did Larry buy last year?

(1) He bought a total of 150 eggs, some but not all individually.
(2) He bought 30 eggs individually and 9 cartons of 12 eggs.

Last edited by kevincan on 04 Jul 2006, 12:11, edited 1 time in total.
Manager
Manager
avatar
Joined: 14 Mar 2006
Posts: 214
Followers: 1

Kudos [?]: 2 [0], given: 0

GMAT Tests User
 [#permalink] New post 04 Jul 2006, 07:48
without solving and by just looking at it i go for D.
Intern
Intern
avatar
Joined: 23 Jun 2006
Posts: 26
Followers: 0

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

 [#permalink] New post 04 Jul 2006, 08:00
B.

(1) is insufficient because he could have bought 25 cartons of 6 eggs or 15 cartons of 12 eggs.

(2) is sufficient because if he bought 30 single eggs and 9 cartons of 12 eggs he would have spent:

30(0.16) + 9(1) = 13.80
15-13.80 = 1.20 --> 2 cartons of 6 eggs
2 cartons of 6 eggs + 9 cartons of 12 eggs = 11 cartons
Director
Director
User avatar
Joined: 08 Jun 2004
Posts: 502
Location: Europe
Followers: 1

Kudos [?]: 10 [0], given: 0

GMAT Tests User
 [#permalink] New post 04 Jul 2006, 08:17
'B' it is.

1) insufficient
2) sufficient
30 individually = $ 4.80
9 cartons of 12 eggss each $1 = $9
2 cartons of 6 eggs each $0.60 = $1.20 TOTAL $15.00 - 11 Cartons.
GMAT Instructor
avatar
Joined: 04 Jul 2006
Posts: 1271
Location: Madrid
Followers: 23

Kudos [?]: 111 [0], given: 0

 [#permalink] New post 04 Jul 2006, 12:08
Notice that the average price paid is exactly the price of a carton of 6. How can this happen? (clue)
Senior Manager
Senior Manager
avatar
Joined: 09 Aug 2005
Posts: 286
Followers: 1

Kudos [?]: 1 [0], given: 0

GMAT Tests User
 [#permalink] New post 04 Jul 2006, 14:27
amartin6165 wrote:
B.

(1) is insufficient because he could have bought 25 cartons of 6 eggs or 15 cartons of 12 eggs 15 x12 = 180 .

(2) is sufficient because if he bought 30 single eggs and 9 cartons of 12 eggs he would have spent:

30(0.16) + 9(1) = 13.80
15-13.80 = 1.20 --> 2 cartons of 6 eggs
2 cartons of 6 eggs + 9 cartons of 12 eggs = 11 cartons


These are the deadly ones

how does one go about it and conclude unique soln for state 1 -

Shampoo,

can you please shed some light on this ?
CEO
CEO
User avatar
Joined: 20 Nov 2005
Posts: 2923
Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008
Followers: 13

Kudos [?]: 72 [0], given: 0

GMAT Tests User
 [#permalink] New post 04 Jul 2006, 16:50
I know B gives the answer but not sure about A.

Somehow I feel A will give the answer like 30 individual, 3 cartons of 6 and 9 cartons of 12.

So I go for D.
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

SVP
SVP
avatar
Joined: 30 Mar 2006
Posts: 1741
Followers: 1

Kudos [?]: 22 [0], given: 0

GMAT Tests User
 [#permalink] New post 05 Jul 2006, 01:15
ps_dahiya wrote:
I know B gives the answer but not sure about A.

Somehow I feel A will give the answer like 30 individual, 3 cartons of 6 and 9 cartons of 12.

So I go for D.


Very true.

B does give the answer. But trying to find out A will be very long.

Gut feeling in these cases is that the answer should be D
Manager
Manager
avatar
Joined: 26 Jun 2006
Posts: 155
Followers: 1

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

 [#permalink] New post 05 Jul 2006, 12:00
ps_dahiya wrote:
I know B gives the answer but not sure about A.

Somehow I feel A will give the answer like 30 individual, 3 cartons of 6 and 9 cartons of 12.

So I go for D.


Exactly my feelings too! Somehow after solving numerous problems of various difficulty I am starting to get a sixth sense on these traps. I hope that my gut feeling would not let me down on the exam date...

So, anybody knows how to show that (A) is sufficient too?
Intern
Intern
avatar
Joined: 11 May 2004
Posts: 49
Location: USA
Followers: 0

Kudos [?]: 1 [0], given: 0

can [#permalink] New post 05 Jul 2006, 12:26
can we have the official answer, i'd go with D, i dont see how any other way A will yield 150.
VP
VP
avatar
Joined: 21 Sep 2003
Posts: 1071
Location: USA
Followers: 3

Kudos [?]: 28 [0], given: 0

GMAT Tests User
 [#permalink] New post 05 Jul 2006, 13:17
v1rok wrote:
ps_dahiya wrote:
I know B gives the answer but not sure about A.

Somehow I feel A will give the answer like 30 individual, 3 cartons of 6 and 9 cartons of 12.

So I go for D.


Exactly my feelings too! Somehow after solving numerous problems of various difficulty I am starting to get a sixth sense on these traps. I hope that my gut feeling would not let me down on the exam date...

So, anybody knows how to show that (A) is sufficient too?


A mathematical approach to solve this would be:

x = No of dozens
y = No of half-dozens
z = No of individual eggs

From the stem,
x + 0.6y+0.16z = 15 --(A)

From 2:
x = 9
z = 30

We can find y (as everyone here has found) and only one such y exists. And hence SUFF.

Condition #1.
Given
x + 0.6y+0.16z = 15 --(A)
12x+6y+z = 150 --(B)

(From #2) x = 9, y = 2 and z = 30 is defenitely one of the solutions. We are looking for alternate solution

(A)*10 - (B) gives
10x = 3z

We ALREADY KNOW that
x = 9, z = 30 --> y = 2 is a valid solution
Try to find other integer solutions for ths:
x = 3, z = 10 --> y = 104/6 Not an integer. Invalid solution
x = 6, z = 20 --> y = 58/6 Not an integer. Invalid solution
x = 12, z = 40 --> y becomes -ve. No neeto to check further

#1. is also sufficient. Hence D.

But as everyone here mentioned, all of this analysis takes a hell lot of time. It is not worth spending more than 3 minutes.
_________________

"To dream anything that you want to dream, that is the beauty of the human mind. To do anything that you want to do, that is the strength of the human will. To trust yourself, to test your limits, that is the courage to succeed."

- Bernard Edmonds

GMAT Instructor
avatar
Joined: 04 Jul 2006
Posts: 1271
Location: Madrid
Followers: 23

Kudos [?]: 111 [0], given: 0

 [#permalink] New post 05 Jul 2006, 14:35
It pays to be observant. From (1), the average price of the eggs was $0.10, which means that the average price of the eggs bought individually or by the dozen was also $0.10

As an equation,
(0.16x+ y)/(x+12y)=0.1 x=no. of ind. eggs, y=no. of dozens

so 3x=10y (x,y) could be (0,0),(10,3),(20,6) or (30,9)

But no. of eggs sold in 6 packs must be multiple of 6

Thus 150-x-12y must be a multiple of 6

Thus x must be 0 or a multiple of 6
Thus x must be either 0 or 30, but x cannot be 0 since x+y must be greater than 0
Thus x=30, y=9 and no. of 6 packs must be 2

Therefore (1) is sufficient, as is (2) OA: D
A friend of mine did the GMAT last week and this was similar to the last question
  [#permalink] 05 Jul 2006, 14:35
    Similar topics Author Replies Last post
Similar
Topics:
1 Experts publish their posts in the topic A grocery store bought some mangoes at a rate of 5 guerrero25 2 25 Jan 2014, 04:54
1 Experts publish their posts in the topic Sam's Grocery store sells potatoes only in 5-pound bags and fozzzy 1 07 Sep 2013, 00:58
I just bought an egg timer! Rux10 8 11 Sep 2010, 07:39
Experts publish their posts in the topic A grocery store wanted to repackage all of the eggs that Other 1 12 Jun 2010, 07:08
If Beth bought grapes and apples at the grocery store, what FN 3 03 Jun 2005, 11:44
Display posts from previous: Sort by

Eggs in Loach s Grocery can only be bought individually

  Question banks Downloads My Bookmarks Reviews Important topics  


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

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®.