It is currently 24 Nov 2017, 06:22

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

A certain college's enrollment at the beginning of 1992

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

Hide Tags

Manager
Manager
avatar
P
Joined: 06 Jan 2015
Posts: 238

Kudos [?]: 111 [0], given: 470

Location: India
Concentration: Operations, Finance
GPA: 3.35
WE: Information Technology (Computer Software)
A certain college's enrollment at the beginning of 1992 [#permalink]

Show Tags

New post 26 Jul 2016, 07:32
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

88% (01:03) correct 12% (01:04) wrong based on 98 sessions

HideShow timer Statistics

A certain college's enrollment at the beginning of 1992 was 20 percent greater than it was at the beginning of 1991, and its enrollment at the beginning of 1993 was 15 percent greater than it was at the beginning of 1992. The college's enrollment at the beginning of 1993 was what percent greater than its enrollment at the beginning of 1991 ?

A) 17.5%
B) 24%
C) 30%
D) 35%
E) 38%
[Reveal] Spoiler: OA

_________________

आत्मनॊ मोक्षार्थम् जगद्धिताय च

Resource: GMATPrep RCs With Solution

Kudos [?]: 111 [0], given: 470

1 KUDOS received
Retired Moderator
avatar
Status: On a mountain of skulls, in the castle of pain, I sit on a throne of blood.
Joined: 30 Jul 2013
Posts: 359

Kudos [?]: 212 [1], given: 133

GMAT ToolKit User Reviews Badge CAT Tests
Re: A certain college's enrollment at the beginning of 1992 [#permalink]

Show Tags

New post 27 Jul 2016, 00:17
1
This post received
KUDOS
1
This post was
BOOKMARKED
NandishSS wrote:
A certain college's enrollment at the beginning of 1992 was 20 percent greater than it was at the beginning of 1991, and its enrollment at the beginning of 1993 was 15 percent greater than it was at the beginning of 1992. The college's enrollment at the beginning of 1993 was what percent greater than its enrollment at the beginning of 1991 ?

A) 17.5%
B) 24%
C) 30%
D) 35%
E) 38%


Suppose enrollment in 1991 was 100

Then enrollment in 1992 will be 120

And enrollment in 1993 will be 120*1.15=138

Increase in 1993 from 1991 = 138-100= 38

Answer : E

Kudos [?]: 212 [1], given: 133

Current Student
User avatar
Joined: 18 Oct 2014
Posts: 903

Kudos [?]: 436 [0], given: 69

Location: United States
GMAT 1: 660 Q49 V31
GPA: 3.98
GMAT ToolKit User
Re: A certain college's enrollment at the beginning of 1992 [#permalink]

Show Tags

New post 27 Jul 2016, 14:00
NandishSS wrote:
A certain college's enrollment at the beginning of 1992 was 20 percent greater than it was at the beginning of 1991, and its enrollment at the beginning of 1993 was 15 percent greater than it was at the beginning of 1992. The college's enrollment at the beginning of 1993 was what percent greater than its enrollment at the beginning of 1991 ?

A) 17.5%
B) 24%
C) 30%
D) 35%
E) 38%


Let's suppose enrollment for 1991= x

Enrollment in 1992= 1.2x (20% greater that previous year)

Enrollment in 1993= 1.15*1.2x (15% greater than previous year)= 1.38x = 38% greater than it was in 1991

E is the answer
_________________

I welcome critical analysis of my post!! That will help me reach 700+

Kudos [?]: 436 [0], given: 69

Manager
Manager
avatar
S
Joined: 29 May 2016
Posts: 131

Kudos [?]: 17 [0], given: 348

CAT Tests
Re: A certain college's enrollment at the beginning of 1992 [#permalink]

Show Tags

New post 27 Jul 2016, 23:57
value in 91 is 100
value in 92 becomes 120
values in 93 would be 115*120 = 13800/100= 138 , which is 38 % greater. E

Kudos [?]: 17 [0], given: 348

VP
VP
avatar
P
Joined: 22 May 2016
Posts: 1006

Kudos [?]: 351 [0], given: 594

A certain college's enrollment at the beginning of 1992 [#permalink]

Show Tags

New post 08 Sep 2017, 15:49
NandishSS wrote:
A certain college's enrollment at the beginning of 1992 was 20 percent greater than it was at the beginning of 1991, and its enrollment at the beginning of 1993 was 15 percent greater than it was at the beginning of 1992. The college's enrollment at the beginning of 1993 was what percent greater than its enrollment at the beginning of 1991 ?

A) 17.5%
B) 24%
C) 30%
D) 35%
E) 38%

Shortcut Formula

When there are only two successive percent changes, A and B, and the numbers are reasonable, there is a simple formula* to calculate the total percent change, in this case, percent increase:

A + B + \(\frac{A*B}{100}\) = total percent change

A here is 20
B here is 15

20 + 15 + \(\frac{20*15}{100}\) =

20 + 15 + \(\frac{300}{100}\) =

20 + 15 + 3 = 38 percent increase

ANSWER E

*"Successive Percentage Changes," in Percentages, Interest, and More, from GMAT Club, here: https://gmatclub.com/forum/percentages-interest-and-more-208098.html#p1596558

Kudos [?]: 351 [0], given: 594

Intern
Intern
avatar
B
Joined: 20 Sep 2016
Posts: 26

Kudos [?]: [0], given: 115

Premium Member CAT Tests
Re: A certain college's enrollment at the beginning of 1992 [#permalink]

Show Tags

New post 07 Oct 2017, 23:16
use the concept of percent of percent:
(1.2*1.15*x)/ x

solve it to find an increase of 38 %

Kudos [?]: [0], given: 115

Re: A certain college's enrollment at the beginning of 1992   [#permalink] 07 Oct 2017, 23:16
Display posts from previous: Sort by

A certain college's enrollment at the beginning of 1992

  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®.