BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

percent

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
Expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Legendary Member
Posts: 659
Joined: Mon Dec 14, 2009 8:12 amFollowed by: 3 members
Thanked: 32 times
by Gurpinder » Sun Aug 15, 2010 5:55 pm
a stereo was marked down by 30% and sold for $84. what was the pre-sale price of the stereo?

.3x=84
280

why is this wrong?
"Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress."
- Alfred A. Montapert, Philosopher.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Quantitative Reasoning |
User avatar
Legendary Member
Posts: 1460
Joined: Tue Dec 29, 2009 1:28 amFollowed by: 7 members
Thanked: 135 times

by selango » Sun Aug 15, 2010 9:02 pm
x-0.3x=84

0.7x=84

x=120
--Anand--
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 1255
Joined: Fri Nov 07, 2008 2:08 pmFollowed by: 90 members
Location: St. Louis
Thanked: 312 times

by Tani » Mon Aug 16, 2010 3:14 pm
If you are unsure of a percent problem, try working backward from your answer.

If the stereo started at $280 and was marked down by 30%, that would be a reduction of $84 leaving a price of $196, not $84.

I suspect you misread the problem. The stereo was marked down BY 30%, not TO 30%.
Tani Wolff
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 659
Joined: Mon Dec 14, 2009 8:12 amFollowed by: 3 members
Thanked: 32 times

by Gurpinder » Mon Aug 16, 2010 7:04 pm
Tani Wolff - Kaplan wrote:If you are unsure of a percent problem, try working backward from your answer.

If the stereo started at $280 and was marked down by 30%, that would be a reduction of $84 leaving a price of $196, not $84.

I suspect you misread the problem. The stereo was marked down BY 30%, not TO 30%.
So Tani,

$84 is the price after the 30% reduction right??
"Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress."
- Alfred A. Montapert, Philosopher.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 1255
Joined: Fri Nov 07, 2008 2:08 pmFollowed by: 90 members
Location: St. Louis
Thanked: 312 times

by Tani » Mon Aug 16, 2010 7:28 pm
Correct :-)
Tani Wolff
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 659
Joined: Mon Dec 14, 2009 8:12 amFollowed by: 3 members
Thanked: 32 times

by Gurpinder » Mon Aug 16, 2010 7:41 pm
Tani Wolff - Kaplan wrote:Correct :-)

AHHHH I see what I was doing wrong. I took $84 to be 30% whereas 84$ is the 70% of the original price

so the equation would be .7x=84 > x=120

thank you for your help!
"Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress."
- Alfred A. Montapert, Philosopher.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 1255
Joined: Fri Nov 07, 2008 2:08 pmFollowed by: 90 members
Location: St. Louis
Thanked: 312 times

by Tani » Mon Aug 16, 2010 8:02 pm
Exactly! :-)
Tani Wolff
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 8149
Joined: Sat Apr 25, 2015 10:56 amFollowed by: 29 members
Location: Los Angeles, CA
Thanked: 43 times

Re: percent

by Scott@TargetTestPrep » Mon Mar 09, 2020 3:45 am
Gurpinder wrote: ↑
Sun Aug 15, 2010 5:55 pm
 a stereo was marked down by 30% and sold for $84. what was the pre-sale price of the stereo?

.3x=84
280

why is this wrong?
Letting n = the presale price of the stereo, we can create the following equation:

0.7n = 84

n = 120

Answer: D

Scott Woodbury-Stewart
Founder and CEO
[email protected]

Image

See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews

ImageImage
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 13
Joined: Sat Aug 01, 2020 9:03 pm

Re: percent

by Ignite » Sat Aug 01, 2020 9:30 pm
The stereo was marked down by 30%.

Let its original price be X.
So, 100% = X

If it's down by 30% then 70% of it is remaining.
So 70% of X is the price it got sold for.

Thus, 0.7X = 84
Or, X = 120




Thanks,
Ignite
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1