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

It is currently 19 Aug 2018, 00:40

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

In a group, 90% members drink at least one of the three drinks ­ Tea,

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

Hide Tags

Manager
Manager
User avatar
G
Joined: 07 Jun 2017
Posts: 175
Location: India
Concentration: Technology, General Management
GMAT 1: 660 Q46 V38
GPA: 3.6
WE: Information Technology (Computer Software)
GMAT ToolKit User Reviews Badge
In a group, 90% members drink at least one of the three drinks ­ Tea,  [#permalink]

Show Tags

New post 12 Oct 2017, 22:31
1
3
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

66% (01:49) correct 34% (01:34) wrong based on 129 sessions

HideShow timer Statistics

In a group, 90% members drink at least one of the three drinks ­ Tea, Coffee, and Latte. 60% members drink at least two of the three drinks and 20% members drink all three. What is the percentage of members who drink exactly one or two of the three drinks?


A) 50
B) 60
C) 70
D) 80
E) 90

Source: http://www.expertsglobal.com

_________________

Regards,
Naveen
email: nkmungila@gmail.com
Please press kudos if you like this post

Magoosh GMAT Instructor
User avatar
G
Joined: 28 Dec 2011
Posts: 4666
Re: In a group, 90% members drink at least one of the three drinks ­ Tea,  [#permalink]

Show Tags

New post 13 Oct 2017, 11:29
nkmungila wrote:
In a group, 90% members drink at least one of the three drinks ­ Tea, Coffee, and Latte. 60% members drink at least two of
the three drinks and 20% members drink all three. What is the percentage of members who drink exactly one or two of the
three drinks?


A) 50
B) 60
C) 70
D) 80
E) 90

Source: http://www.expertsglobal.com

Dear nkmungila,

I'm happy to respond. :-)

First of all, the math here is relatively easy. The "drink all three group" is 20%. The 60% for "at least 2" includes this, so 40% drink exactly two drinks. Both of these groups, the 20% who drink exactly 3 drinks and the 40% who drink exactly 2 drinks, are included in the 90%. 90 - 20 - 40 = 30% drink exactly one drink. The sum of "exactly one" and "exactly two" is 30 + 40 = 70%. OA = (C).

Also, I will say that the grammar in the prompt is very poor. I am not convinced that the person who wrote the question had a complete understanding of the English language. On the GMAT, every single prompt in the Quant section is grammatically flawless.

Does all this make sense?
Mike :-)
_________________

Mike McGarry
Magoosh Test Prep

Image

Image

Education is not the filling of a pail, but the lighting of a fire. — William Butler Yeats (1865 – 1939)

Senior Manager
Senior Manager
avatar
S
Joined: 15 Jan 2017
Posts: 367
CAT Tests
Re: In a group, 90% members drink at least one of the three drinks ­ Tea,  [#permalink]

Show Tags

New post 10 Dec 2017, 15:13
1
Did a kind of elimination.
90% drink at least one of three --> 60% drink AT LEAST two --> 20 % all three
90% one of three --> 90 - 60 = 30% drink only 1 --> 60-20 = 40% only two
40 + 30 = 70%
Re: In a group, 90% members drink at least one of the three drinks ­ Tea, &nbs [#permalink] 10 Dec 2017, 15:13
Display posts from previous: Sort by

In a group, 90% members drink at least one of the three drinks ­ Tea,

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

Events & Promotions

PREV
NEXT


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®.