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 →

How many people did Apex .....

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 61
Joined: Fri Jun 06, 2008 5:58 am
Thanked: 1 times
by moonlite » Sat Sep 27, 2008 8:34 am
How many people did Apex Company employ in 1990?
(1) The company employed 538 more people in 1991 than in 1990.
(2) The company employed 20 percent more people in 1991 than in 1990.

Please explain. Thanks.

B

I thought you would need both to termine "how many"?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Senior | Next Rank: 100 Posts
Posts: 41
Joined: Thu Jul 12, 2007 1:16 am
Location: Cape Town South Africa
Thanked: 5 times

by Saffa » Sat Sep 27, 2008 8:56 am
you are right, but with 20% being 538 you can easily calculate what can be 100%

You've said B, but I'm quite sure it must be C
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
GMAT Instructor
Posts: 3225
Joined: Tue Jan 08, 2008 2:40 pmFollowed by: 614 members
Location: Toronto
Thanked: 1710 times
GMAT Score:800

by Stuart@KaplanGMAT » Sat Sep 27, 2008 10:53 am
Saffa wrote:you are right, but with 20% being 538 you can easily calculate what can be 100%

You've said B, but I'm quite sure it must be C
Indeed, (C) is the correct answer.

Here's a good general rule for DS:

If you're asked to calculate a rate/%/ratio, you don't necessarily need actual numbers.

If you're asked to calculate an actual number, you need at least 1 actual number somewhere in the information.

Statement (2) only gives us a %. There's no way to solve for the number of employees without at least one number in the information.
Image

Stuart Kovinsky | Kaplan GMAT Faculty | Toronto

Kaplan Exclusive: The Official Test Day Experience | Ready to Take a Free Practice Test? | Kaplan/Beat the GMAT Member Discount
BTG100 for $100 off a full course
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 871
Joined: Wed Aug 13, 2008 7:48 am
Thanked: 48 times

Re: How many people did Apex .....

by stop@800 » Sat Sep 27, 2008 11:08 am
moonlite wrote:How many people did Apex Company employ in 1990?
(1) The company employed 538 more people in 1991 than in 1990.
(2) The company employed 20 percent more people in 1991 than in 1990.

Please explain. Thanks.

B
Can you please let us know sourse of this and a<b<c question?
I wants to know so that I remain extra cautious while solving them :)

I thought you would need both to termine "how many"?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1