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

It is currently 20 Nov 2018, 16:29

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 November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
  • All GMAT Club Tests are Free and open on November 22nd in celebration of Thanksgiving Day!

     November 22, 2018

     November 22, 2018

     10:00 PM PST

     11:00 PM PST

    Mark your calendars - All GMAT Club Tests are free and open November 22nd to celebrate Thanksgiving Day! Access will be available from 0:01 AM to 11:59 PM, Pacific Time (USA)
  • Free lesson on number properties

     November 23, 2018

     November 23, 2018

     10:00 PM PST

     11:00 PM PST

    Practice the one most important Quant section - Integer properties, and rapidly improve your skills.

Sara bought both German chocolate and Swiss chocolate for some cakes

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

Hide Tags

SVP
SVP
User avatar
D
Joined: 26 Mar 2013
Posts: 1887
Reviews Badge CAT Tests
Sara bought both German chocolate and Swiss chocolate for some cakes  [#permalink]

Show Tags

New post 05 Sep 2016, 15:56
2
5
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

69% (01:48) correct 31% (02:22) wrong based on 98 sessions

HideShow timer Statistics

Sara bought both German chocolate and Swiss chocolate for some cakes she was baking. The Swiss chocolate cost $3.5 per pound, and German chocolate cost $2.5 per pound. if the total the she spent on chocolate was $35 and both types of chocolate were purchased in whole number of pounds, how many total pounds of chocolate she purchased?

A. 7
B. 8
C. 10
D. 12
E. 15
Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 7039
Re: Sara bought both German chocolate and Swiss chocolate for some cakes  [#permalink]

Show Tags

New post 05 Sep 2016, 16:12
3
1
Mo2men wrote:
Sara bought both German chocolate and Swiss chocolate for some cakes she was baking. The Swiss chocolate cost $3.5 per pound, and German chocolate cost $2.5 per pound. if the total the she spent on chocolate was $35 and both types of chocolate were purchased in whole number of pounds, how many total pounds of chocolate she purchased?

A. 7
B. 8
C. 10
D. 12
E. 15



Hi,

Two ways....
1) the choices give away the answer...
If there were all the expensive ones,3.5....
There would be 35/3.5 or 10 of them but since 2.5$ ones are also there, answer has to be >10....
ONLY D and E are left....

If all were 2.5$ ones, there will be 35/2.5 or 14...
So ONLY 12 is left

Ans D..

2) equation
Let there be x of 2.5 and y of 3.5..2.5x + 3.5y =35....
Or 5x + 7y = 70.......
Clearly x has to be a multiple of 7 as other two terms are multiple of 7... similarly with y as 5..
So x =7 & y= 5...
Total 5+7=12
D
_________________

1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html


GMAT online Tutor

Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 8866
Premium Member
Re: Sara bought both German chocolate and Swiss chocolate for some cakes  [#permalink]

Show Tags

New post 04 Nov 2018, 21:25
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: Sara bought both German chocolate and Swiss chocolate for some cakes &nbs [#permalink] 04 Nov 2018, 21:25
Display posts from previous: Sort by

Sara bought both German chocolate and Swiss chocolate for some cakes

  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®.