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 →

If in a certain population,

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 151
Joined: Tue May 13, 2008 7:04 pm
Location: dallas,tx usa
Thanked: 6 times
by ektamatta » Sun May 25, 2008 11:51 pm
If in a certain population, people are born at an average rate of 9 people every 2 seconds and people die at an average rate of 3 people every 2 seconds, by approximately how many people does the population increase in 1 day?

a.17,280
b.25,920
c.129,600
d.259,200
e.388,800

OA is D

please explain
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Senior | Next Rank: 100 Posts
Posts: 42
Joined: Fri Mar 14, 2008 1:56 am
Location: India
Thanked: 4 times
GMAT Score:730

by getneonow » Mon May 26, 2008 12:40 am
birth per sec = 9/2

death per sec = 3/2

increase per sec = 9/2 - 3/2 = 3

so in one day increase = 3 * 24* 3600 = 259200
Last edited by getneonow on Mon May 26, 2008 2:31 am, edited 1 time in total.
MBA : My passion and My pursuit
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 192
Joined: Tue Apr 29, 2008 7:41 am
Thanked: 14 times

by aatech » Mon May 26, 2008 1:37 am
getneonow wrote: so in one day increase = 3 * 24* 3600 = 388800
3 * 24* 3600 = 259200
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 151
Joined: Tue May 13, 2008 7:04 pm
Location: dallas,tx usa
Thanked: 6 times

still confused

by ektamatta » Mon May 26, 2008 8:15 am
How did u get 3600?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 200
Joined: Sun Jun 17, 2007 10:46 am
Location: Canada
Thanked: 9 times

Re: still confused

by beeparoo » Mon May 26, 2008 11:37 am
ektamatta wrote:How did u get 3600?
There are 3600 sec in an hour.

Or, in longer form, (60 sec/min)(60 min/hr) = 3600 sec/hr
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1