(Go: >> BACK << -|- >> HOME <<)
Last visit was: 03 Jun 2024, 03:41 It is currently 03 Jun 2024, 03:41
Decision Tracker
My Rewards
Unanswered
Active Topics
New posts
New comers' posts
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel

From January 1, 1991, to January 1, 1993, the number of peop

SORT BY:
Date
Kudos
Tags:
Find Similar Topics 
Show Tags
Hide Tags
User avatar
jlgdr
VP
VP
Joined: 06 Sep 2013
Posts: 1342
Own Kudos [?]: 2409 [20]
Given Kudos: 355
Concentration: Finance
Schools: Wharton '17 (A) HBS '17 (WA$)
Send PM
GMAT ToolKit User
From January 1, 1991, to January 1, 1993, the number of peop [#permalink] From January 1, 1991, to January 1, 1993, the number of peop   11 Oct 2013, 17:14
4
Kudos
16
Bookmarks
00:00
A
B
C
D
E

Difficulty:

35% (medium)

Question Stats:

72% (01:59) correct 28% (02:00) wrong based on 1655 sessions
Hide Show DIFFICULTY AND TIMER STATISTICS
From January 1, 1991, to January 1, 1993, the number of people enrolled in health maintenance organizations increased by 15 percent. The enrollment on January 1, 1993, was 45 million. How many million people, to the nearest million, were enrolled in health maintenance organizations on January 1, 1991 ?

(A) 38
(B) 39
(C) 40
(D) 41
(E) 42
ShowHide Answer
Official Answer
B
User avatar
L
Bunuel
Math Expert
Joined: 02 Sep 2009
Posts: 93501
Own Kudos [?]: 628768 [0]
Given Kudos: 82071
Send PM
CAT Tests Forum Quiz Mode
Re: From January 1, 1991, to January 1, 1993, the number of peop [#permalink] From January 1, 1991, to January 1, 1993, the number of peop   11 Oct 2013, 17:33
Expert Reply
jlgdr wrote:
From January 1, 1991, to January 1, 1993, the number of people enrolled in health maintenance organizations increased by 15 percent. The enrollment on January 1, 1993, was 45 million. How many million people, to the nearest million, were enrolled in health maintenance organizations on January 1, 1991 ?

(A) 38
(B) 39
(C) 40
(D) 41
(E) 42


1.15x=45 --> 23/20*x=45 --> x=45*20/23=900/23=~39.

Answer: B.
avatar
B
kanak2016
Intern
Intern
Joined: 03 Oct 2016
Posts: 30
Own Kudos [?]: 3 [0]
Given Kudos: 5
Send PM
Re: From January 1, 1991, to January 1, 1993, the number of peop [#permalink] From January 1, 1991, to January 1, 1993, the number of peop   06 Nov 2019, 18:28
jlgdr wrote:
From January 1, 1991, to January 1, 1993, the number of people enrolled in health maintenance organizations increased by 15 percent. The enrollment on January 1, 1993, was 45 million. How many million people, to the nearest million, were enrolled in health maintenance organizations on January 1, 1991 ?

(A) 38
(B) 39
(C) 40
(D) 41
(E) 42



Jan 1, 1991 = x no. of people enrolled in health maintenance organization
Jan 1, 1993 = 45 million

equation:
x+0.15x= 45 million
1.15x= 45 million
x= approx 39.1 million therefor, Ans choice (B)
User avatar
L
BrentGMATPrepNow
GMAT Club Legend
GMAT Club Legend
Joined: 12 Sep 2015
Posts: 6817
Own Kudos [?]: 30411 [0]
Given Kudos: 799
Location: Canada
Send PM
Re: From January 1, 1991, to January 1, 1993, the number of peop [#permalink] From January 1, 1991, to January 1, 1993, the number of peop   01 Sep 2020, 10:27
Expert Reply
Top Contributor
jlgdr wrote:
From January 1, 1991, to January 1, 1993, the number of people enrolled in health maintenance organizations increased by 15 percent. The enrollment on January 1, 1993, was 45 million. How many million people, to the nearest million, were enrolled in health maintenance organizations on January 1, 1991 ?

(A) 38
(B) 39
(C) 40
(D) 41
(E) 42


From January 1, 1991, to January 1, 1993, the number of people enrolled in health maintenance organizations increased by 15 percent.
Let x = the number of enrolled people on January 1, 1991
So, 1.15x = the number of enrolled people on January 1, 1993

The enrollment on January 1, 1993, was 45 million.
We can write: 1.15x = 45 (million)
Solve: x = 45/1.15 ≈ 39.1

Answer: B

Cheers,
Brent
User avatar
L
Abhishek009
Board of Directors
Joined: 11 Jun 2011
Status:QA & VA Forum Moderator
Posts: 6066
Own Kudos [?]: 4725 [0]
Given Kudos: 463
Location: India
GPA: 3.5
WE:Business Development (Commercial Banking)
Send PM
GMAT ToolKit User
Re: From January 1, 1991, to January 1, 1993, the number of peop [#permalink] From January 1, 1991, to January 1, 1993, the number of peop   01 Sep 2020, 11:48
jlgdr wrote:
From January 1, 1991, to January 1, 1993, the number of people enrolled in health maintenance organizations increased by 15 percent. The enrollment on January 1, 1993, was 45 million. How many million people, to the nearest million, were enrolled in health maintenance organizations on January 1, 1991 ?

(A) 38
(B) 39
(C) 40
(D) 41
(E) 42

\(\frac{45}{115}*100\) ~ \(39\), Answer must be (B)
User avatar
S
Sneha2021
Senior Manager
Senior Manager
Joined: 20 Dec 2020
Posts: 289
Own Kudos [?]: 30 [0]
Given Kudos: 497
Location: India
Send PM
Re: From January 1, 1991, to January 1, 1993, the number of peop [#permalink] From January 1, 1991, to January 1, 1993, the number of peop   15 Nov 2021, 11:24
Instead of calculating 45/1.15, we can use answer choices to arrive at answer.

Let's pick easy no. - Option C
15% of 40 = 10% of 40 + 5% of 40 (whenever number like 15% or 5% are given, break down because calculating 10% is easy)
= 4 + 4/2
= 6
40+6 = 46 mil, so answer must be little less than 40, select B or do a quick approx. for 39 with the above approach
User avatar
B
ArnauG
Senior Manager
Senior Manager
Joined: 23 Dec 2022
Posts: 316
Own Kudos [?]: 35 [0]
Given Kudos: 199
Send PM
Re: From January 1, 1991, to January 1, 1993, the number of peop [#permalink] From January 1, 1991, to January 1, 1993, the number of peop   27 May 2023, 08:57
To find the number of million people enrolled in health maintenance organizations on January 1, 1991, we need to determine the enrollment before the 15 percent increase.

Let's assume the enrollment on January 1, 1991, was x million.

The enrollment on January 1, 1993, increased by 15 percent, so we have:

x + 0.15x = 45

Combining like terms:

1.15x = 45

Dividing both sides by 1.15:

x = 45 / 1.15

Using a calculator, we find:

x ≈ 39.1304

Rounding to the nearest million, we get:

x ≈ 39 million

Therefore, approximately 39 million people were enrolled in health maintenance organizations on January 1, 1991.

The closest option to this value is (B) 39.
gmatclubot
Re: From January 1, 1991, to January 1, 1993, the number of peop [#permalink]
27 May 2023, 08:57
Moderator:
Bunuel
Math Expert
93501 posts