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

It is currently 16 Oct 2019, 08:36

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 difference between the value of a number increased by 25

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

Hide Tags

Find Similar Topics 
Manager
Manager
avatar
Joined: 07 Feb 2010
Posts: 116
The difference between the value of a number increased by 25  [#permalink]

Show Tags

New post 20 Dec 2010, 09:11
2
1
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

87% (01:34) correct 13% (02:16) wrong based on 196 sessions

HideShow timer Statistics

The difference between the value of a number increased by 25% and the value of the original number decreased by 30% is 22. What is the original number?

A. 40
B. 50
C. 65
D. 70
E. 90
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 58380
Re: the differance between the value of a number  [#permalink]

Show Tags

New post 20 Dec 2010, 09:15
2
GMAT Club Legend
GMAT Club Legend
User avatar
V
Joined: 12 Sep 2015
Posts: 4006
Location: Canada
Re: The difference between the value of a number increased by 25  [#permalink]

Show Tags

New post 30 Mar 2017, 09:01
1
Top Contributor
3
anilnandyala wrote:
The difference between the value of a number increased by 25% and the value of the original number decreased by 30% is 22. What is the original number?

A. 40
B. 50
C. 65
D. 70
E. 90


Let x = the original number

Value of the number INCREASED by 25% = 1.25x
Value of the number DECREASED by 30% = 0.7x

DIFFERENCE = 22
So, 1.25x - 0.7x = 22
Simplify: 0.55x = 22
So, x = 22/0.55

NOTE: We need not calculate 22/0.55
Notice that 22/0.5 = 44
Since 0.55 is a little bit BIGGER than 0.5, we can conclude that 22/0.55 will be a little bit SMALLER than 44

Answer:

RELATED VIDEOS FROM OUR COURSE



_________________
Test confidently with gmatprepnow.com
Image
Director
Director
User avatar
V
Joined: 04 Dec 2015
Posts: 745
Location: India
Concentration: Technology, Strategy
WE: Information Technology (Consulting)
GMAT ToolKit User
Re: The difference between the value of a number increased by 25  [#permalink]

Show Tags

New post 17 May 2017, 14:37
The difference between the value of a number increased by 25% and the value of the original number decreased by 30% is 22. What is the original number?

A. 40
B. 50
C. 65
D. 70
E. 90

Let the number be x.
Number increased by 25% = 125% of x = 1.25x
Original number decreased by 30% = 70% of x = 0.7x
Difference between values = 1.25x - 0.7x = 22, 0.55x = 22
x = 22/0.55 = 40
Answer A...

_________________
Kindly press "+1 Kudos" to appreciate :)
Target Test Prep Representative
User avatar
D
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 8069
Location: United States (CA)
Re: The difference between the value of a number increased by 25  [#permalink]

Show Tags

New post 19 Oct 2018, 15:20
anilnandyala wrote:
The difference between the value of a number increased by 25% and the value of the original number decreased by 30% is 22. What is the original number?

A. 40
B. 50
C. 65
D. 70
E. 90


We can let n = the original number and create the equation:

1.25n - 0.7n = 22

0.55n = 22

n = 40

Answer: A
_________________

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: The difference between the value of a number increased by 25   [#permalink] 19 Oct 2018, 15:20
Display posts from previous: Sort by

The difference between the value of a number increased by 25

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





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