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

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
Live EA class + 6 months of EA OnDemand
  • Expert-led weekly online sessions
  • EA Masterclass access between classes
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

130-point score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

Help me with GMAT prep question

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 75
Joined: Tue Feb 10, 2009 11:30 pm
by nhai2003 » Tue Jun 02, 2009 10:40 pm
The cost of delivery for an order of desk chairs was $ 10.000 for the first chair, and $ 1.00 for each additional chair in the order. If an office manager placed an order for n desk chairs, is n >24?

1. The delivery cost for the order totaled more than $ 30
2. The average (arithmetic mean) delivery cost per chair of the n chairs was $ 1.36

Thanks guys!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Legendary Member
Posts: 682
Joined: Fri Jan 16, 2009 2:40 amFollowed by: 1 member
Thanked: 32 times

Re: Help me with GMAT prep question

by Vemuri » Tue Jun 02, 2009 10:58 pm
IMO B.

Stmt1: Lets consider the minimum delivery cost to be $31. That means there were 1($10)+21($1) = 22 orders, which is less than 24. But, if you consider the delivery cost to be $50, then there are 41 orders, which is more than 24. So, not sufficient.

Stmt2: If the average of n chairs is $1.36, we can setup the equation:
($10+$1(n-1))/n = $1.36. On solving, you will get n=25. Sufficient.

Hope this helps.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 75
Joined: Tue Feb 10, 2009 11:30 pm

by nhai2003 » Tue Jun 02, 2009 11:06 pm
Vemuri,

where you get the "n-1"'??
I dont understand it
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 682
Joined: Fri Jan 16, 2009 2:40 amFollowed by: 1 member
Thanked: 32 times

by Vemuri » Tue Jun 02, 2009 11:34 pm
nhai2003 wrote:Vemuri,

where you get the "n-1"'??
I dont understand it
Ok, we know the formula for Average = Total/# of items. From the question stem we know that the first item costs $10 & then $1 for the rest (n-1) items. So, the total is $10+$1(n-1).

I Hope it is clear now.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 75
Joined: Tue Feb 10, 2009 11:30 pm

by nhai2003 » Wed Jun 03, 2009 2:02 pm
OA is B. Thanks Vemuri!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1