Last visit was: 24 Apr 2026, 01:08 It is currently 24 Apr 2026, 01:08
Home
Messages
Tests
Schools
Events
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
Back to Forum
Create Topic
User avatar
Nanobotstv
User avatar
Joined: 13 Sep 2016
Last visit: 17 Apr 2019
Posts: 93
Own Kudos:
748
 [13]
Given Kudos: 347
GMAT 1: 800 Q51 V51
GMAT 1: 800 Q51 V51
Posts: 93
Kudos: 748
 [13]
A certain store sells only records and CDs. All CDs cost $7.82, includ Updated on: 19 Oct 2016, 21:29
Originally posted by Nanobotstv on 19 Oct 2016, 20:05.
Last edited by Bunuel on 19 Oct 2016, 21:29, edited 1 time in total.
Edited the question.
Kudos
Add Kudos
13
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

75% (hard)

Question Stats:

49% (01:45) correct 51% (01:49) wrong based on 469 sessions

History

Date
Time
Result
Not Attempted Yet
A certain store sells only records and CD's. All CD's cost $7.82, including tax, and all records cost $4.18, including tax. Yesterday, did John buy more than 5 records at this store?

(1) Yesterday, John spent less than $25 at the store.
(2) Yesterday, John bought at least one CD at the store.
ShowHide Answer
Official Answer
A
Most Helpful Reply
User avatar
BrentGMATPrepNow
User avatar
Major Poster
Joined: 12 Sep 2015
Last visit: 31 Oct 2025
Posts: 6,733
Own Kudos:
36,453
 [9]
Given Kudos: 799
Location: Canada
Expert
Expert reply
Posts: 6,733
Kudos: 36,453
 [9]
A certain store sells only records and CDs. All CDs cost $7.82, includ 20 Oct 2016, 08:04
8
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
alanforde800Maximus
A certain store sells only records and CD's. All CD's cost $7.82, including tax, and all records cost $4.18, including tax. Yesterday, did John buy more than 5 records at this store?

(1) Yesterday, John spent less than $25 at the store.
(2) Yesterday, John bought at least one CD at the store.
Show more

Target question: Did John buy more than 5 records ?

Given: CD's cost $7.82, and records cost $4.18

Statement 1: Yesterday, John spent less than $25 at the store.
Notice that it costs $25.08 to buy 6 records, since (6)($4.18) = $25.08
So, if John spent less than $25, it is impossible for him to buy 6 or more records.
In other words, John did NOT buy more than 5 records
Since we can answer the target question with certainty, statement 1 is SUFFICIENT

Statement 2: Yesterday, John bought at least one CD at the store
Since there's no information restricting the number of purchases John made, we can see that statement 2 is NOT SUFFICIENT.
For example, here are two possible cases:
Case a: John bought 1 CD and 0 records. So, John did NOT buy more than 5 records
Case b: John bought 1 CD and 10 records. So, John DID buy more than 5 records
Since we cannot answer the target question with certainty, statement 2 is NOT SUFFICIENT

Answer =
Show Spoiler
A

Cheers,
Brent
General Discussion
User avatar
pushpitkc
User avatar
Joined: 26 Feb 2016
Last visit: 19 Feb 2025
Posts: 2,800
Own Kudos:
6,235
 [1]
Given Kudos: 47
Location: India
GPA: 3.12
Posts: 2,800
Kudos: 6,235
 [1]
A certain store sells only records and CDs. All CDs cost $7.82, includ 19 Oct 2016, 20:46
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
1
7.82x + 4.18y < 25(y - total number of records bought , x - total number of CDs bought) If x=0 & y >= 6, the total cost cannot be less than 25.
When the number of CDs is greater than 0, this statement is obviously going to fail.
Hence, this condition is sufficient.

2 He bought atleast one CD. However we don't know the total amount he spent at the store. So he could have bought any 2 number of CDs or even 6 number of CDs.

This condition alone is not sufficient. (Option A) is the solution
User avatar
Nanobotstv
User avatar
Joined: 13 Sep 2016
Last visit: 17 Apr 2019
Posts: 93
Own Kudos:
748
Given Kudos: 347
GMAT 1: 800 Q51 V51
GMAT 1: 800 Q51 V51
Posts: 93
Kudos: 748
A certain store sells only records and CDs. All CDs cost $7.82, includ 20 Oct 2016, 06:02
Kudos
Add Kudos
Bookmarks
Bookmark this Post
pushpitkc
1
7.82x + 4.18y < 25(y - total number of records bought , x - total number of CDs bought) If x=0 & y >= 6, the total cost cannot be less than 25.
When the number of CDs is greater than 0, this statement is obviously going to fail.
Hence, this condition is sufficient.

2 He bought atleast one CD. However we don't know the total amount he spent at the store. So he could have bought any 2 number of CDs or even 6 number of CDs.

This condition alone is not sufficient. (Option A) is the solution
Show more

hello
Can you please explain how & y >= 6?
User avatar
BrentGMATPrepNow
User avatar
Major Poster
Joined: 12 Sep 2015
Last visit: 31 Oct 2025
Posts: 6,733
Own Kudos:
36,453
Given Kudos: 799
Location: Canada
Expert
Expert reply
Posts: 6,733
Kudos: 36,453
A certain store sells only records and CDs. All CDs cost $7.82, includ 11 May 2019, 08:43
Kudos
Add Kudos
Bookmarks
Bookmark this Post
eantolovic

Hello Brent,

I appreciate your logic in answering this question; however, I am struggling on a fundamental necessity in order to make this true. Statement (1) declares "Yesterday, John spent less than $25 at the store." It doesn't say what he spent that money on, whether it was CD's, records, or candy at the register. Therefore, we cannot determine whether he bought 6 records, 5 records and some candy, or none at all. On behalf of this logic I can only surmise that Statement (1) is insufficient evidence in order to answer "Yesterday, did John buy more than 5 records at this store?"

Statement (2) would also be insufficient since we are still unaware whether John bought more than 5 records.

Since Statements (1) & (2) are insufficient, we can now determine if they can be combined. If (1) states John spent less than $25, and (2) states John bought at least 1 CD, then we now know for sure that John wouldn't have enough remaining funds to buy those 5 rad vinyls on display. Therefore, and according to this line of reasoning, the answer would be
Show Spoiler
C
.
Show more

Be careful. The part in blue above is not correct.
While we may not know exactly what was purchased, we can be certain that John did NOT buy 6 records (because that would cost more than $25)
We can also be certain that John did NOT buy 7 records (because that would cost more than $25)
We can also be certain that John did NOT buy 8 records (because that would cost more than $25)
We can also be certain that John did NOT buy 9 records (because that would cost more than $25)
We can also be certain that John did NOT buy 10 records (because that would cost more than $25)
.....etc

So, even though we have no idea what John purchased, we can be 100% that John did NOT buy 6, 7, 8, 9, 10, (etc) records.
In other words, we can definitively answer the target question with a resounding "NO"

Does that help?



Cheers,
Brent
avatar
eantolovic
avatar
Joined: 07 May 2019
Last visit: 26 May 2020
Posts: 5
Own Kudos:
5
Given Kudos: 541
Posts: 5
Kudos: 5
A certain store sells only records and CDs. All CDs cost $7.82, includ 12 May 2019, 05:01
Kudos
Add Kudos
Bookmarks
Bookmark this Post
GMATPrepNow
eantolovic

Hello Brent,

I appreciate your logic in answering this question; however, I am struggling on a fundamental necessity in order to make this true. Statement (1) declares "Yesterday, John spent less than $25 at the store." It doesn't say what he spent that money on, whether it was CD's, records, or candy at the register. Therefore, we cannot determine whether he bought 6 records, 5 records and some candy, or none at all. On behalf of this logic I can only surmise that Statement (1) is insufficient evidence in order to answer "Yesterday, did John buy more than 5 records at this store?"

Statement (2) would also be insufficient since we are still unaware whether John bought more than 5 records.

Since Statements (1) & (2) are insufficient, we can now determine if they can be combined. If (1) states John spent less than $25, and (2) states John bought at least 1 CD, then we now know for sure that John wouldn't have enough remaining funds to buy those 5 rad vinyls on display. Therefore, and according to this line of reasoning, the answer would be
Show Spoiler
C
.

Be careful. The part in blue above is not correct.
While we may not know exactly what was purchased, we can be certain that John did NOT buy 6 records (because that would cost more than $25)
We can also be certain that John did NOT buy 7 records (because that would cost more than $25)
We can also be certain that John did NOT buy 8 records (because that would cost more than $25)
We can also be certain that John did NOT buy 9 records (because that would cost more than $25)
We can also be certain that John did NOT buy 10 records (because that would cost more than $25)
.....etc

So, even though we have no idea what John purchased, we can be 100% that John did NOT buy 6, 7, 8, 9, 10, (etc) records.
In other words, we can definitively answer the target question with a resounding "NO"

Does that help?



Cheers,
Brent
Show more

Yes, it does. I do realize that studying all day can lead to hopeless errors, but my mind must have been so tangled yesterday to overlook something so simple as that :dazed Thank you for the reply and I apologize for the unnecessary challenge. I'll delete my comment in order not to confuse any others. Have a great day!
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 38,965
Own Kudos:
1,117
Posts: 38,965
Kudos: 1,117
A certain store sells only records and CDs. All CDs cost $7.82, includ 09 Jan 2026, 10:16
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Automated notice from GMAT Club BumpBot:

A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.

This post was generated automatically.
Moderators:
Bunuel
Math Expert
109802 posts
kingbucky
498 posts
Gmat860sanskar
212 posts