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

It is currently 26 Apr 2019, 09:16

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

The percent change from 29 to 43 is approximately what...?

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

Hide Tags

 
Current Student
User avatar
Joined: 18 Jul 2015
Posts: 39
Location: Brazil
Concentration: General Management, Strategy
GMAT 1: 640 Q39 V38
GMAT 2: 700 Q47 V38
The percent change from 29 to 43 is approximately what...?  [#permalink]

Show Tags

New post 27 Feb 2016, 05:07
5
00:00
A
B
C
D
E

Difficulty:

  65% (hard)

Question Stats:

53% (01:45) correct 47% (02:04) wrong based on 117 sessions

HideShow timer Statistics

The percent change from 29 to 43 is approximately what percent of the percent change from 43 to 57?

(A) 50%
(B) 66%
(C) 110%
(D) 133%
(E) 150%

Please explain the fastest way to think throw this problem. I know that this type of question can give you some extra time on harder problems during the test.
Please give your opinion about the difficult level of the question.
CEO
CEO
avatar
S
Joined: 20 Mar 2014
Posts: 2624
Concentration: Finance, Strategy
Schools: Kellogg '18 (M)
GMAT 1: 750 Q49 V44
GPA: 3.7
WE: Engineering (Aerospace and Defense)
GMAT ToolKit User Reviews Badge
The percent change from 29 to 43 is approximately what...?  [#permalink]

Show Tags

New post 27 Feb 2016, 05:47
1
fabricioka wrote:
The percent change from 29 to 43 is approximately what percent of the percent change from 43 to 57?

(A) 50%
(B) 66%
(C) 110%
(D) 133%
(E) 150%

Please explain the fastest way to think throw this problem. I know that this type of question can give you some extra time on harder problems during the test.
Please give your opinion about the difficult level of the question.


This question should be a 600-700 level just because of the care you have to take in order to arrive at the correct solution.

\(%age change = \frac{(final value - initial value)*100}{initial value}\)

Thus, %age change from 29 to 43 = 14/29 \(\approx\) 50% or 0.5 (we can approximate in this question as the options given are far apart).

%age change from 43 to 57 = 14/43 \(\approx\)0.33

Thus, the required value = 50/33 = 1+17/33 \(\approx\) 1+0.5 = 1.5 or 150%

E is thus the correct answer.

Hope this helps.
Current Student
avatar
B
Joined: 08 Jan 2015
Posts: 80
Location: Thailand
GMAT 1: 540 Q41 V23
GMAT 2: 570 Q44 V24
GMAT 3: 550 Q44 V21
GMAT 4: 660 Q48 V33
GPA: 3.31
WE: Science (Other)
The percent change from 29 to 43 is approximately what...?  [#permalink]

Show Tags

New post 29 Feb 2016, 01:53
1
You can set an equation like this,

\(\frac{(43 - 29)}{29} = \frac{x}{100}\frac{(57-43)}{43}\)

\(\frac{14}{29} =\frac{x}{100} \frac{14}{43}\)

Divide both side by 14, and multiply both side by 43x100, you get

\(x = \frac{(43)(100)}{29}\)

x is approximately \(\frac{(45)(100)}{30}\) which is \(150\)
Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 7609
Re: The percent change from 29 to 43 is approximately what...?  [#permalink]

Show Tags

New post 29 Feb 2016, 04:29
fabricioka wrote:
The percent change from 29 to 43 is approximately what percent of the percent change from 43 to 57?

(A) 50%
(B) 66%
(C) 110%
(D) 133%
(E) 150%

Please explain the fastest way to think throw this problem. I know that this type of question can give you some extra time on harder problems during the test.
Please give your opinion about the difficult level of the question.



Hi,
the change is 14 in both cases, so it boils down to bases..
(14/29)/(14/43)=43/29= nearly 7*6/7*4= 6/4, %=100*3/2 which is 150%

_________________
Manager
Manager
User avatar
G
Joined: 30 May 2012
Posts: 201
Location: United States (TX)
Concentration: Finance, Marketing
GPA: 3.3
WE: Information Technology (Consulting)
The percent change from 29 to 43 is approximately what...?  [#permalink]

Show Tags

New post 17 Jul 2017, 09:10
Lesson learnt: Always approximate the value to the hundredth decimal. I stopped long division of 43/29 [I setup the equation the same way as Aves above did] to the tenth decimal and arrived at 1.4 and I thought 1.4 was closer to 133% than it was to 150% (although technically, it is mid-point) . Little did I know that quotient is actually 1.48. Yeap...mistake.
GMAT Club Bot
The percent change from 29 to 43 is approximately what...?   [#permalink] 17 Jul 2017, 09:10
Display posts from previous: Sort by

The percent change from 29 to 43 is approximately what...?

  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®.