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

It is currently 22 Jun 2018, 02:00

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

Events & Promotions in June
Open Detailed Calendar

Molly purchased Brand A binders at $8.00 apiece and Brand B binders at

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

Hide Tags

Senior Manager
Senior Manager
User avatar
D
Joined: 02 Jan 2017
Posts: 314
Location: Canada
Reviews Badge
Molly purchased Brand A binders at $8.00 apiece and Brand B binders at [#permalink]

Show Tags

New post 23 Feb 2017, 05:47
1
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

86% (01:12) correct 14% (01:55) wrong based on 70 sessions

HideShow timer Statistics

Molly purchased Brand A binders at $8.00 apiece and Brand B binders at $5.60 apiece. If she bought a total of 12 binders for $84.00, how many Brand A binders did she buy?

○A○ 2
○B○ 5
○C○ 6
○D○ 7
○E○ 10
Board of Directors
User avatar
G
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 3511
Location: India
GPA: 3.5
WE: Business Development (Commercial Banking)
GMAT ToolKit User Premium Member
Re: Molly purchased Brand A binders at $8.00 apiece and Brand B binders at [#permalink]

Show Tags

New post 23 Feb 2017, 09:14
vikasp99 wrote:
Molly purchased Brand A binders at $8.00 apiece and Brand B binders at $5.60 apiece. If she bought a total of 12 binders for $84.00, how many Brand A binders did she buy?

○A○ 2
○B○ 5
○C○ 6
○D○ 7
○E○ 10


\(8a + 5.6 ( 12 - a ) = 84\)

Or, \(8a + 67.2 - 5.6a = 84\)

Or, \(2.4a = 16.8\)

Or, \(a = 7\)

Thus, answer must be (D) 7
_________________

Thanks and Regards

Abhishek....

PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS

How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only )

Expert Post
1 KUDOS received
Target Test Prep Representative
User avatar
G
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2570
Re: Molly purchased Brand A binders at $8.00 apiece and Brand B binders at [#permalink]

Show Tags

New post 27 Feb 2017, 11:52
1
vikasp99 wrote:
Molly purchased Brand A binders at $8.00 apiece and Brand B binders at $5.60 apiece. If she bought a total of 12 binders for $84.00, how many Brand A binders did she buy?

○A○ 2
○B○ 5
○C○ 6
○D○ 7
○E○ 10


We are given that Molly purchased Brand A binders at $8.00 apiece and Brand B binders at $5.60 apiece and bought a total of 12 binders for $84.00. If we let the number of Brand A binders purchased = a and the number of Brand B binders purchased = b, we can setup two equations:

a + b = 12

b = 12 - a

and

8a + 5.6b = 84

80a + 56b = 840

10a + 7b = 105

We can substitute 12 - a for b in the equation 10a + 7b = 105:

10a + 7(12 - a) = 105

10a + 84 - 7a = 105

3a = 21

a = 7

Answer: D
_________________

Jeffery Miller
Head of GMAT Instruction

GMAT Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

Re: Molly purchased Brand A binders at $8.00 apiece and Brand B binders at   [#permalink] 27 Feb 2017, 11:52
Display posts from previous: Sort by

Molly purchased Brand A binders at $8.00 apiece and Brand B binders at

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


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®.