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

It is currently 12 Dec 2018, 17:52

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 December
PrevNext
SuMoTuWeThFrSa
2526272829301
2345678
9101112131415
16171819202122
23242526272829
303112345
Open Detailed Calendar
  • The winning strategy for 700+ on the GMAT

     December 13, 2018

     December 13, 2018

     08:00 AM PST

     09:00 AM PST

    What people who reach the high 700's do differently? We're going to share insights, tips and strategies from data we collected on over 50,000 students who used examPAL.
  • GMATbuster's Weekly GMAT Quant Quiz, Tomorrow, Saturday at 9 AM PST

     December 14, 2018

     December 14, 2018

     09:00 AM PST

     10:00 AM PST

    10 Questions will be posted on the forum and we will post a reply in this Topic with a link to each question. There are prizes for the winners.

Mark has 60 blue marbles, half of which are checked, 50 checked marble

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

Hide Tags

Intern
Intern
User avatar
S
Joined: 03 Jul 2018
Posts: 38
Location: India
GMAT 1: 560 Q47 V28
GMAT 2: 560 Q47 V28
GMAT 3: 560 Q47 V28
GMAT 4: 560 Q47 V28
GPA: 3.88
CAT Tests
Mark has 60 blue marbles, half of which are checked, 50 checked marble  [#permalink]

Show Tags

New post 25 Sep 2018, 06:18
7
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

80% (02:19) correct 20% (02:45) wrong based on 41 sessions

HideShow timer Statistics

Mark has 60 blue marbles, half of which are checked, 50 checked marbles, half of which are oval, and 40 oval marbles, half of which are blue. If 10 marbles Mark has are blue, checked, & oval, and all marbles he has either blue, checked or oval, then how many total marbles Mark has?

A 45
B 75
C 50
D 85
E 60
CEO
CEO
User avatar
P
Status: GMATINSIGHT Tutor
Joined: 08 Jul 2010
Posts: 2711
Location: India
GMAT: INSIGHT
WE: Education (Education)
Reviews Badge
Re: Mark has 60 blue marbles, half of which are checked, 50 checked marble  [#permalink]

Show Tags

New post 25 Sep 2018, 07:28
1
shard87 wrote:
Mark has 60 blue marbles, half of which are checked, 50 checked marbles, half of which are oval, and 40 oval marbles, half of which are blue. If 10 marbles Mark has are blue, checked, & oval, and all marbles he has either blue, checked or oval, then how many total marbles Mark has?

A 45
B 75
C 50
D 85
E 60


Answer Option D

Check the solution as attached.

The black values are given information

Blue values are derived values
Attachments

File comment: www.GMATinsight.com
121.jpeg
121.jpeg [ 61.15 KiB | Viewed 429 times ]


_________________

Prosper!!!
GMATinsight
Bhoopendra Singh and Dr.Sushma Jha
e-mail: info@GMATinsight.com I Call us : +91-9999687183 / 9891333772
Online One-on-One Skype based classes and Classroom Coaching in South and West Delhi
http://www.GMATinsight.com/testimonials.html

ACCESS FREE GMAT TESTS HERE:22 ONLINE FREE (FULL LENGTH) GMAT CAT (PRACTICE TESTS) LINK COLLECTION

GMATH Teacher
User avatar
G
Status: GMATH founder
Joined: 12 Oct 2010
Posts: 536
Re: Mark has 60 blue marbles, half of which are checked, 50 checked marble  [#permalink]

Show Tags

New post 25 Sep 2018, 15:15
1
shard87 wrote:
Mark has 60 blue marbles, half of which are checked, 50 checked marbles, half of which are oval, and 40 oval marbles, half of which are blue. If 10 marbles Mark has are blue, checked, & oval, and all marbles he has are either blue, checked or oval, then how many total marbles Mark has?

A 45
B 75
C 50
D 85
E 60


Image


\(? = T\)

Based on the Venn diagram presented above, let´s apply the simplifier immediately:

\(? = 60 + 40 + 50 - \left[ {\left( {20 - 10} \right) + \left( {25 - 10} \right) + \left( {30 - 10} \right)} \right] - 2 \cdot 10 = 85\)


Regards,
Fabio.
_________________

Fabio Skilnik :: https://GMATH.net (Math for the GMAT) or GMATH.com.br (Portuguese version)
Course release PROMO : finish our test drive till 30/Dec with (at least) 50 correct answers out of 92 (12-questions Mock included) to gain a 50% discount!

Intern
Intern
User avatar
S
Joined: 03 Jul 2018
Posts: 38
Location: India
GMAT 1: 560 Q47 V28
GMAT 2: 560 Q47 V28
GMAT 3: 560 Q47 V28
GMAT 4: 560 Q47 V28
GPA: 3.88
CAT Tests
Re: Mark has 60 blue marbles, half of which are checked, 50 checked marble  [#permalink]

Show Tags

New post 30 Sep 2018, 03:48
fskilnik GMATinsight

Thank a lot for helping me out
GMATH Teacher
User avatar
G
Status: GMATH founder
Joined: 12 Oct 2010
Posts: 536
Re: Mark has 60 blue marbles, half of which are checked, 50 checked marble  [#permalink]

Show Tags

New post 30 Sep 2018, 07:19
shard87 wrote:
fskilnik GMATinsight

Thank a lot for helping me out

Dear shard87,

Thank you for the message and for the kudos.
See you in other posts and success in your studies!

Regards,
Fabio.
_________________

Fabio Skilnik :: https://GMATH.net (Math for the GMAT) or GMATH.com.br (Portuguese version)
Course release PROMO : finish our test drive till 30/Dec with (at least) 50 correct answers out of 92 (12-questions Mock included) to gain a 50% discount!

GMAT Club Bot
Re: Mark has 60 blue marbles, half of which are checked, 50 checked marble &nbs [#permalink] 30 Sep 2018, 07:19
Display posts from previous: Sort by

Mark has 60 blue marbles, half of which are checked, 50 checked marble

  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®.