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

It is currently 21 Mar 2019, 13:13

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

A group of x people is practicing levitation yoga. One-fourth of the

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

Hide Tags

 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 53771
A group of x people is practicing levitation yoga. One-fourth of the  [#permalink]

Show Tags

New post 15 Sep 2016, 04:01
1
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

83% (02:00) correct 17% (02:00) wrong based on 59 sessions

HideShow timer Statistics

A group of x people is practicing levitation yoga. One-fourth of the people rise up in the air, and after a while, 3 of them come back down. How many people are now practicing yoga on the ground?

A. 2/3*(x+3)
B. (3/4)(x+4)
C. 3(4x+4)
D. 3(x+4)
E. 4(3x+4)

_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

Senior Manager
Senior Manager
User avatar
Joined: 11 Nov 2014
Posts: 328
Location: India
Concentration: Finance, International Business
WE: Project Management (Telecommunications)
GMAT ToolKit User Premium Member
Re: A group of x people is practicing levitation yoga. One-fourth of the  [#permalink]

Show Tags

New post 15 Sep 2016, 04:51
1
Since the question mentions "one-fourth", pick a number that's divisible by 4 e.g x=16

A 2/3 (16+3) = 2/3 (19) = that's not even an integer, since 19 is not divisible by 3.
B (3/4)(16+4) = (3/4) (20) = reduce the 20 with the 4 to get 3⋅5/1 = 15. That matches your goal, but you still need to check all 5.
C 3 (4⋅16+4) = Take 16 and multiply it times 4? already way greater than 15.
D 3 (16+4) = Again, much too big to equal 15.
E (3⋅16+4) = way too big.

B
Retired Moderator
avatar
G
Joined: 26 Nov 2012
Posts: 592
Premium Member
Re: A group of x people is practicing levitation yoga. One-fourth of the  [#permalink]

Show Tags

New post 15 Sep 2016, 04:54
Bunuel wrote:
A group of x people is practicing levitation yoga. One-fourth of the people rise up in the air, and after a while, 3 of them come back down. How many people are now practicing yoga on the ground?

A. 2/3*(x+3)
B. (3/4)(x+4)
C. 3(4x+4)
D. 3(x+4)
E. 4(3x+4)


This is how I tried.

let x be the number of people, given 1/4(x) are in air ( they are saints ) 3/4(x) are on the ground ( normal people)

Lets take the number which is divisble by 4... let is be 20.

Now 1/4(x) = 1/4(20 ) = 5 in air and 3/4(20) = 15 and three members are on ground now ... Total 18 are on ground.

Sub the number x = 20 in option only B suits this i.e. 3/4(24) = 18.

IMO option B.

Let me know if I am missing anything.
Manager
Manager
avatar
Joined: 05 Jun 2015
Posts: 78
Location: United States
WE: Engineering (Transportation)
Re: A group of x people is practicing levitation yoga. One-fourth of the  [#permalink]

Show Tags

New post 16 Sep 2016, 06:45
2
one fourth rise up in the air => three fourth are on the ground.
Of those who rise up, 3 return back down.
Total on the ground is
\(\frac{3x}{4}\) + 3
= \(\frac{3}{4}\)\((x+4)\)
Retired Moderator
avatar
P
Joined: 04 Aug 2016
Posts: 486
Location: India
Concentration: Leadership, Strategy
GPA: 4
WE: Engineering (Telecommunications)
Premium Member
Re: A group of x people is practicing levitation yoga. One-fourth of the  [#permalink]

Show Tags

New post 16 Sep 2016, 07:01
Should be B?


Remaining would be 3/4 x + 3
Manager
Manager
avatar
B
Joined: 14 Jun 2016
Posts: 65
Location: India
GMAT 1: 610 Q49 V21
WE: Engineering (Manufacturing)
Reviews Badge
Re: A group of x people is practicing levitation yoga. One-fourth of the  [#permalink]

Show Tags

New post 02 Aug 2017, 00:41
warriorguy wrote:
Should be B?


Remaining would be 3/4 x + 3


Yes it would be option B.
Just take 3/4 common and the expression becomes the same as mentioned in option B i.e. 3/4(x+4)
_________________

If you appreciate my post then please click +1Kudos :)

Senior SC Moderator
avatar
V
Joined: 22 May 2016
Posts: 2558
A group of x people is practicing levitation yoga. One-fourth of the  [#permalink]

Show Tags

New post 02 Aug 2017, 13:38
Bunuel wrote:
A group of x people is practicing levitation yoga. One-fourth of the people rise up in the air, and after a while, 3 of them come back down. How many people are now practicing yoga on the ground?

A. 2/3*(x+3)
B. (3/4)(x+4)
C. 3(4x+4)
D. 3(x+4)
E. 4(3x+4)

Bunuel , I am laughing too hard to begin to attempt to answer this question. Kudos and thanks for levity. Your and others' questions often contain enjoyable snark or creative wit. This one blew the top off my merriment chart. *gasp*
_________________

And above all, watch with glittering eyes the whole world around you
because the greatest secrets are always hidden in the most unlikely places.
Those who don't believe in magic will never find it
.
—Roald Dahl

Intern
Intern
avatar
B
Joined: 03 Feb 2013
Posts: 1
Location: United States
Concentration: Entrepreneurship, General Management
Schools: McCombs PT '17
GPA: 3.59
Re: A group of x people is practicing levitation yoga. One-fourth of the  [#permalink]

Show Tags

New post 02 Aug 2017, 16:52
as 1/4 people are up in the air 3/4*x are remaining on the ground plus the 3 people that came down later

total = 3*x/4 + 3 => 3/4(x+4)
CEO
CEO
User avatar
V
Joined: 12 Sep 2015
Posts: 3515
Location: Canada
Re: A group of x people is practicing levitation yoga. One-fourth of the  [#permalink]

Show Tags

New post 14 Feb 2019, 11:16
Top Contributor
Bunuel wrote:
A group of x people is practicing levitation yoga. One-fourth of the people rise up in the air, and after a while, 3 of them come back down. How many people are now practicing yoga on the ground?

A. 2/3*(x+3)
B. (3/4)(x+4)
C. 3(4x+4)
D. 3(x+4)
E. 4(3x+4)


One-fourth of the people rise up in the air
If 1/4 of the x people are in the AIR, the remaining 3/4 of the x people are on the GROUND
So, (3/4)x = number of people on the GROUND

After a while, 3 of them come back down.
So, the number of people on the GROUND is increased by 3

So, now (3/4)x + 3 = number of people on the GROUND

Check the answer choices . . . not there!
Or so it seems.

If we take answer choice B, (3/4)(x+4), and expand it, we get: (3/4)x + 3
PERFECT!

Answer: B

Cheers,
Brent
_________________

Test confidently with gmatprepnow.com
Image

VP
VP
avatar
G
Joined: 09 Mar 2018
Posts: 1007
Location: India
Re: A group of x people is practicing levitation yoga. One-fourth of the  [#permalink]

Show Tags

New post 14 Feb 2019, 11:35
Bunuel wrote:
A group of x people is practicing levitation yoga. One-fourth of the people rise up in the air, and after a while, 3 of them come back down. How many people are now practicing yoga on the ground?

A. 2/3*(x+3)
B. (3/4)(x+4)
C. 3(4x+4)
D. 3(x+4)
E. 4(3x+4)


Let x = 12

Now 1/4 of the people rise up in the air, will be 3,

9 on ground after that 3 came down, this makes the total as 12

Only B gives the value of 12 when we substitute back for x

12
_________________

If you notice any discrepancy in my reasoning, please let me know. Lets improve together.

Quote which i can relate to.
Many of life's failures happen with people who do not realize how close they were to success when they gave up.

GMAT Club Bot
Re: A group of x people is practicing levitation yoga. One-fourth of the   [#permalink] 14 Feb 2019, 11:35
Display posts from previous: Sort by

A group of x people is practicing levitation yoga. One-fourth of the

  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®.