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

It is currently 16 Dec 2018, 23:36

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
  • 10 Keys to nail DS and CR questions

     December 17, 2018

     December 17, 2018

     06:00 PM PST

     07:00 PM PST

    Join our live webinar and learn how to approach Data Sufficiency and Critical Reasoning problems, how to identify the best way to solve each question and what most people do wrong.
  • R1 Admission Decisions: Estimated Decision Timelines and Chat Links for Major BSchools

     December 17, 2018

     December 17, 2018

     10:00 PM PST

     11:00 PM PST

    From Dec 5th onward, American programs will start releasing R1 decisions. Chat Rooms: We have also assigned chat rooms for every school so that applicants can stay in touch and exchange information/update during decision period.

Every student in a room is a junior or a senior, and there are no....

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

Hide Tags

Director
Director
User avatar
V
Joined: 11 Feb 2015
Posts: 618
Premium Member CAT Tests
Every student in a room is a junior or a senior, and there are no....  [#permalink]

Show Tags

New post 05 Aug 2018, 03:04
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

94% (00:54) correct 6% (01:30) wrong based on 34 sessions

HideShow timer Statistics

Every student in a room is a junior or a senior, and there are no other people in the room. How many seniors are in the room?

(1) If 56 seniors were to leave the room, the ratio of seniors to juniors would be 18 to 5.

(2) There are a total of 677 students in the room.

_________________

"Please hit :thumbup: +1 Kudos if you like this post" :student_man:

_________________
Manish :geek:

"Only I can change my life. No one can do it for me"

Director
Director
User avatar
P
Status: Learning stage
Joined: 01 Oct 2017
Posts: 931
WE: Supply Chain Management (Energy and Utilities)
Premium Member
Re: Every student in a room is a junior or a senior, and there are no....  [#permalink]

Show Tags

New post 05 Aug 2018, 04:07
CAMANISHPARMAR wrote:
Every student in a room is a junior or a senior, and there are no other people in the room. How many seniors are in the room?

(1) If 56 seniors were to leave the room, the ratio of seniors to juniors would be 18 to 5.

(2) There are a total of 677 students in the room.


Question stem:- To find the number of seniors

St1:-Total number of students in the room is not known.
Hence, insufficient.

St2:- Total number of students=677.
No information on number of Juniors or Seniors or any relationship between the number of seniors and juniors.
Hence, insufficient.

Combined, We have
\(S+J=677\) and
\(\frac{S-56}{J}=\frac{18}{5}\)-----------(1)
Substituting J=677-S in (1),we can determine S.
Sufficient.

Ans. (C)
_________________

Regards,

PKN

Rise above the storm, you will find the sunshine

Manager
Manager
User avatar
G
Status: Studying SC
Joined: 04 Sep 2017
Posts: 116
GPA: 3.6
WE: Sales (Computer Software)
Re: Every student in a room is a junior or a senior, and there are no....  [#permalink]

Show Tags

New post 05 Aug 2018, 18:24
CAMANISHPARMAR wrote:
Every student in a room is a junior or a senior, and there are no other people in the room. How many seniors are in the room?

(1) If 56 seniors were to leave the room, the ratio of seniors to juniors would be 18 to 5.

(2) There are a total of 677 students in the room.


Answered this in 16 seconds without doing any math.

Question: How many Seniors?

(1) No info on total number of students. Quantity could be very high or very low. Not Sufficient

(2) No info on how many are Juniors or Seniors. Could be 676 Seniors and 1 Junior or could be 675 Seniors and 2 Juniors... Not Sufficient


(1) + (2) We have the total number and the ratio. No need to work out the math, there can only be one quantity.

Answer: C
_________________

Would I rather be feared or loved? Easy. Both. I want people to be afraid of how much they love me.

How to sort questions by Topic, Difficulty, and Source:
https://gmatclub.com/forum/search.php?view=search_tags

Senior Manager
Senior Manager
User avatar
P
Joined: 07 Jul 2012
Posts: 377
Location: India
Concentration: Finance, Accounting
GPA: 3.5
Premium Member CAT Tests
Re: Every student in a room is a junior or a senior, and there are no....  [#permalink]

Show Tags

New post 06 Aug 2018, 02:23
Let S= Number of Seniors
....J= ................ Juniors

(1) \(\frac{S-56}{J}\)= \(\frac{18}{5}\)

(2) S+J= 677

(1) &(2)

No need to calculate. No of seniors can be found.

Answer: C.

_________________

Kindly hit kudos if my post helps!

GMAT Club Bot
Re: Every student in a room is a junior or a senior, and there are no.... &nbs [#permalink] 06 Aug 2018, 02:23
Display posts from previous: Sort by

Every student in a room is a junior or a senior, and there are no....

  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®.