It is currently 16 Oct 2017, 20:40

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

At the time of admission, 35 percent of all doctorate students at a pa

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

Hide Tags

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 41875

Kudos [?]: 128463 [0], given: 12173

At the time of admission, 35 percent of all doctorate students at a pa [#permalink]

Show Tags

New post 22 Nov 2016, 05:45
Expert's post
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  85% (hard)

Question Stats:

38% (01:20) correct 62% (02:00) wrong based on 55 sessions

HideShow timer Statistics

At the time of admission, 35 percent of all doctorate students at a particular business school have a Ph.D. in a non-business related field. Meantime, 45 newly admitted students have a master's degree as their highest degree. Exactly how many Ph.D. students are there at this business school based on the following statistics at the time of admission for the entire program?

(1) 35 have a doctorate degree completed in a non-business related field.

(2) 45 percent have a master's degree as their highest degree.
[Reveal] Spoiler: OA

_________________

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

Kudos [?]: 128463 [0], given: 12173

Math Forum Moderator
User avatar
P
Joined: 13 Apr 2015
Posts: 1501

Kudos [?]: 1101 [0], given: 884

Location: India
Concentration: Strategy, General Management
WE: Information Technology (Consulting)
GMAT ToolKit User Premium Member CAT Tests
Re: At the time of admission, 35 percent of all doctorate students at a pa [#permalink]

Show Tags

New post 22 Nov 2016, 07:37
Let the number of doctorate students be = x = ?
PhD(non biz) = 0.35x
Number of students who have a masters degree = 45

St1: 0.35x = 35 --> x = 100
Sufficient

St2: 45 = 0.45x --> x = 100
Sufficient

Answer: D

Kudos [?]: 1101 [0], given: 884

Manager
Manager
avatar
B
Joined: 17 Aug 2016
Posts: 50

Kudos [?]: 1 [0], given: 82

At the time of admission, 35 percent of all doctorate students at a pa [#permalink]

Show Tags

New post 22 Nov 2016, 13:23
Vyshak wrote:
Let the number of doctorate students be = x = ?
PhD(non biz) = 0.35x
Number of students who have a masters degree = 45

St1: 0.35x = 35 --> x = 100
Sufficient

St2: 45 = 0.45x --> x = 100
Sufficient

Answer: D


IMHO it is C.

Stm1: says that 35 students have a PhD not related to business, but we don't know how many of the other 65 students have a PhD in business.

Stm2: says that 45% of the students have only a master. This means the 45 newly admitted students plus thoese who were already in the school without a PhD. But we don't know the latter information, therfore Stm 2 is not suff.

1&2: We know that there are 100 students (stm1), therefore the 45% students with only a master need to be the 45 students newly admitted. Thus 100-45=55 are students with a PhD.

Kudos [?]: 1 [0], given: 82

Math Forum Moderator
User avatar
P
Joined: 13 Apr 2015
Posts: 1501

Kudos [?]: 1101 [0], given: 884

Location: India
Concentration: Strategy, General Management
WE: Information Technology (Consulting)
GMAT ToolKit User Premium Member CAT Tests
Re: At the time of admission, 35 percent of all doctorate students at a pa [#permalink]

Show Tags

New post 22 Nov 2016, 18:59
bazu wrote:
Vyshak wrote:
Let the number of doctorate students be = x = ?
PhD(non biz) = 0.35x
Number of students who have a masters degree = 45

St1: 0.35x = 35 --> x = 100
Sufficient

St2: 45 = 0.45x --> x = 100
Sufficient

Answer: D


IMHO it is C.

Stm1: says that 35 students have a PhD not related to business, but we don't know how many of the other 65 students have a PhD in business.

Stm2: says that 45% of the students have only a master. This means the 45 newly admitted students plus thoese who were already in the school without a PhD. But we don't know the latter information, therfore Stm 2 is not suff.

1&2: We know that there are 100 students (stm1), therefore the 45% students with only a master need to be the 45 students newly admitted. Thus 100-45=55 are students with a PhD.


35 percent of all doctorate students at a particular business school have a Ph.D. in a non-business related field --> This means that if there are a total of x doctorate students then 0.35x have PhD in non business related field.
St1 provides the number of students having doctorate in non business related field as 35. So we can get the value of x.
St2 has a logic similar to St1.

Kudos [?]: 1101 [0], given: 884

Intern
Intern
avatar
B
Joined: 14 Nov 2012
Posts: 13

Kudos [?]: 2 [0], given: 32

At the time of admission, 35 percent of all doctorate students at a pa [#permalink]

Show Tags

New post 07 Sep 2017, 20:33
Vyshak wrote:
Let the number of doctorate students be = x = ?
PhD(non biz) = 0.35x
Number of students who have a masters degree = 45

St1: 0.35x = 35 --> x = 100
Sufficient

St2: 45 = 0.45x --> x = 100
Sufficient

Answer: D


I think there's a problem with your St2 explanation.
"45% have master degree as their highest degree" should mean that the PhD, MD percentage is 55%, 45% respectively (assume that there are only 2 types of admitted students).
So, let z be the total number of admitted students, then we have 0.45z = 45
=> z= 100
=> number of PhD = 0.55 x 100 = 55
It would be a better explanation.
Cheers

Posted from my mobile device

Kudos [?]: 2 [0], given: 32

At the time of admission, 35 percent of all doctorate students at a pa   [#permalink] 07 Sep 2017, 20:33
Display posts from previous: Sort by

At the time of admission, 35 percent of all doctorate students at a pa

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


GMAT Club MBA Forum Home| About| Terms and Conditions| 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®.