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

It is currently 23 Oct 2019, 19:32

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

In 2004, 2,400 condos sold, 15% of the total housing units sold that

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

Hide Tags

Find Similar Topics 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 58464
In 2004, 2,400 condos sold, 15% of the total housing units sold that  [#permalink]

Show Tags

New post 16 Aug 2017, 02:02
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

74% (01:31) correct 26% (01:35) wrong based on 90 sessions

HideShow timer Statistics

Manager
Manager
avatar
B
Joined: 02 Nov 2015
Posts: 163
GMAT 1: 640 Q49 V29
Re: In 2004, 2,400 condos sold, 15% of the total housing units sold that  [#permalink]

Show Tags

New post 16 Aug 2017, 03:38
1
It's a B.
Total no of condos sold is 16000.
So 16000-2400=13600 is answer.

Sent from my Lenovo TAB S8-50LC using GMAT Club Forum mobile app
Intern
Intern
avatar
B
Joined: 22 Apr 2015
Posts: 25
WE: Business Development (Internet and New Media)
Reviews Badge
Re: In 2004, 2,400 condos sold, 15% of the total housing units sold that  [#permalink]

Show Tags

New post 16 Aug 2017, 03:47
2
Let the total number of housing unit= x
15% of x are condos and remaining are not condos
15% of x= 2400 =>x= 16000
no of "not condos"= 16000-2400= 13600

Ans- B
Manager
Manager
avatar
G
Joined: 15 Feb 2017
Posts: 76
Re: In 2004, 2,400 condos sold, 15% of the total housing units sold that  [#permalink]

Show Tags

New post 16 Aug 2017, 04:01
1
It's B
Total no of condos sold is 16000.2400/0.15=16000
So 16000-2400=13600 is answer.
Please give me kudos. I need them badly to increase my score
Intern
Intern
avatar
B
Joined: 05 Apr 2017
Posts: 4
Re: In 2004, 2,400 condos sold, 15% of the total housing units sold that  [#permalink]

Show Tags

New post 16 Aug 2017, 07:41
condos = 15% of total
so not condos = 85% of total

Now, 15% of total = 2400
85% of total = (?)
i.e. 2400 x 85 / 15
= 13600 (b)
GMATH Teacher
User avatar
P
Status: GMATH founder
Joined: 12 Oct 2010
Posts: 935
Re: In 2004, 2,400 condos sold, 15% of the total housing units sold that  [#permalink]

Show Tags

New post 27 Sep 2018, 09:03
Bunuel wrote:
In 2004, 2,400 condos sold, 15% of the total housing units sold that year. How many units sold in 2004 were not condos?

(A) 16,000

(B) 13,600

(C) 12,400

(D) 11, 200

(E) 8,600

Let´s use the "backbone" of our method: connect DATA to FOCUS as soon and as clearly as possible:

\({\text{DATA}}:\,\,\,\,\,2,400\,\,{\text{condos}}\,\,\,\mathop = \limits^{\left( * \right)} \,\,\,\frac{{15}}{{100}}\,\,\left( {{\text{total}}} \right)\)

\({\text{FOCUS}}:\,\,\,? = \frac{{85}}{{100}}\left( {{\text{total}}} \right)\)

\(? = \boxed{\frac{{85}}{{15}}} \cdot \underbrace {\frac{{15}}{{100}}\,\,\left( {{\text{total}}} \right)}_{\left( * \right)\,\,\,2400}\,\, = \,\,\,\frac{{17}}{3}\left( {2400} \right) = \underleftrightarrow {100 \cdot \left( {\frac{{17 \cdot 24}}{3}} \right)}\,\, = \,\,13600\)


This solution follows the notations and rationale taught in the GMATH method.

Regards,
Fabio.
_________________
Fabio Skilnik :: GMATH method creator (Math for the GMAT)
Our high-level "quant" preparation starts here: https://gmath.net
Target Test Prep Representative
User avatar
D
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 8147
Location: United States (CA)
Re: In 2004, 2,400 condos sold, 15% of the total housing units sold that  [#permalink]

Show Tags

New post 02 Oct 2018, 19:51
Bunuel wrote:
In 2004, 2,400 condos sold, 15% of the total housing units sold that year. How many units sold in 2004 were not condos?

(A) 16,000

(B) 13,600

(C) 12,400

(D) 11, 200

(E) 8,600


We can create the following equation in which n = the total number of housing units sold in 2004:

2,400 = 0.15n

2,400/0.15 = n

16,000 = n

Thus, the number of housing units sold that were not condos was 16,000 - 2,400 = 13,600.

Alternate Solution:

We can set up a ratio: if 15% is 2,400, then 85% is x, as follows:

0.15/2400 = 0.85/x

0.15x = 2400 * 0.85

x = (2400 * 0.85)/0.15

x = 13,600

Answer: B
_________________

Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
TTP - Target Test Prep Logo
122 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

GMAT Club Bot
Re: In 2004, 2,400 condos sold, 15% of the total housing units sold that   [#permalink] 02 Oct 2018, 19:51
Display posts from previous: Sort by

In 2004, 2,400 condos sold, 15% of the total housing units sold that

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





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne