Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 26 May 2017, 01:05

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# If 1,500 is increased by 20%, and then reduced by y%

Author Message
TAGS:

### Hide Tags

Current Student
Joined: 06 Sep 2013
Posts: 2005
Concentration: Finance
Followers: 68

Kudos [?]: 643 [0], given: 355

If 1,500 is increased by 20%, and then reduced by y% [#permalink]

### Show Tags

20 Sep 2013, 17:20
00:00

Difficulty:

(N/A)

Question Stats:

100% (01:26) correct 0% (00:00) wrong based on 8 sessions

### HideShow timer Statistics

If 1,500 is increased by 20%, and then reduced by y%, yielding 1,080, what is y?

OA is
[Reveal] Spoiler:
40%

Last edited by Bunuel on 20 Sep 2013, 17:34, edited 1 time in total.
Edited the question.
Math Expert
Joined: 02 Sep 2009
Posts: 38894
Followers: 7737

Kudos [?]: 106174 [0], given: 11607

Re: If 1,500 is increased by 20%, and then reduced by y% [#permalink]

### Show Tags

20 Sep 2013, 17:26
Expert's post
1
This post was
BOOKMARKED
jlgdr wrote:
If 1,500 is increased by 20%, and then reduced by y%, yielding 1,080, what is y?

OA is
[Reveal] Spoiler:
40%

1,500*1.2 = 1,800.

1,800(1 - y/100) = 1,080 --> (1 - y/100) = 0.6 --> y = 40%.
_________________
GMAT Club Legend
Joined: 09 Sep 2013
Posts: 15456
Followers: 649

Kudos [?]: 209 [0], given: 0

Re: If 1,500 is increased by 20%, and then reduced by y% [#permalink]

### Show Tags

21 Mar 2017, 21:21
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Veritas Prep GMAT Instructor
Joined: 16 Oct 2010
Posts: 7375
Location: Pune, India
Followers: 2288

Kudos [?]: 15115 [1] , given: 224

Re: If 1,500 is increased by 20%, and then reduced by y% [#permalink]

### Show Tags

21 Mar 2017, 23:33
1
KUDOS
Expert's post
jlgdr wrote:
If 1,500 is increased by 20%, and then reduced by y%, yielding 1,080, what is y?

OA is
[Reveal] Spoiler:
40%

Using percent-fraction equivalents:

1500 * (6/5) * n = 1080

n = 1080/300*6 = 3/5

This is equivalent to a reduction of 40%. So y = 40

For more, check:
https://www.veritasprep.com/blog/2011/0 ... rcentages/
https://www.veritasprep.com/blog/2011/0 ... e-changes/
_________________

Karishma
Veritas Prep | GMAT Instructor
My Blog

Get started with Veritas Prep GMAT On Demand for \$199

Veritas Prep Reviews

Math Forum Moderator
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 2678
Location: India
GPA: 3.5
Followers: 111

Kudos [?]: 859 [0], given: 324

Re: If 1,500 is increased by 20%, and then reduced by y% [#permalink]

### Show Tags

22 Mar 2017, 07:11
1
This post was
BOOKMARKED
jlgdr wrote:
If 1,500 is increased by 20%, and then reduced by y%, yielding 1,080, what is y?

OA is
[Reveal] Spoiler:
40%

$$\frac{1500*( 100 + 20 )}{100} * \frac{( 100 - y )}{100} = 1080$$

Or, $$1800*\frac{( 100 - y )}{100} = 1080$$

Or, $$18( 100 - y ) = 1080$$

Or, $$2( 100 - y ) = 120$$

Or, $$100 - y = 60$$

So, $$y = 40$$
_________________

Thanks and Regards

Abhishek....

PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS

How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only )

Target Test Prep Representative
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 910
Followers: 34

Kudos [?]: 510 [1] , given: 5

Re: If 1,500 is increased by 20%, and then reduced by y% [#permalink]

### Show Tags

23 Mar 2017, 16:59
1
KUDOS
Expert's post
jlgdr wrote:
If 1,500 is increased by 20%, and then reduced by y%, yielding 1,080, what is y?

OA is
[Reveal] Spoiler:
40%

If 1,500 is increased by 20%, we have:

1,500 x 1.2 = 1,800

If 1,800 is reduced by y% to give us 1,080, we have:

(1 - y/100)(1800) = 1,080

1,800 - 18y = 1,080

720 = 18y

y = 40
_________________

Jeffery Miller

GMAT Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

Manager
Joined: 04 Dec 2015
Posts: 154
Location: India
Concentration: Technology, Strategy
Followers: 0

Kudos [?]: 29 [0], given: 254

If 1,500 is increased by 20%, and then reduced by y% [#permalink]

### Show Tags

17 May 2017, 15:55
If 1,500 is increased by 20%, and then reduced by y%, yielding 1,080, what is y?

1500 increased by 20% = 120% of 1500 = $$\frac{120}{100}$$ x 1500 = 1800
1800 decreased by y% = (100-y) % of 1800 = $$\frac{(100-y)}{100}$$ x 1800 = (100-y) x 18 = 1080
100-y = $$\frac{1080}{18}$$ = 60
y = 100 - 60 = 40
y = 40%

_________________
Kindly press "+1 Kudos" to appreciate
If 1,500 is increased by 20%, and then reduced by y%   [#permalink] 17 May 2017, 15:55
Similar topics Replies Last post
Similar
Topics:
7 When the price of an article was reduced by 20% its sale increased by 3 05 Apr 2017, 20:14
3 Ratio of two numbers x and y is 3:5. If x is increased by 20% and y is 3 19 Nov 2015, 22:23
If y is decreased by 20% and then increased by 60%, what is 1 20 Sep 2013, 17:29
8 A certain candy manufacturer reduced the weight of Candy Bar M by 20 12 09 Feb 2017, 23:11
At 15:00 there were 20 students in the computer lab. At 15:03 and ever 4 11 Aug 2010, 14:20
Display posts from previous: Sort by