Last visit was: 03 Nov 2024, 21:23 It is currently 03 Nov 2024, 21:23
Close
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
Your Progress

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
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Close
Request Expert Reply
Confirm Cancel
avatar
ruturajp
Joined: 05 Oct 2011
Last visit: 29 Jun 2012
Posts: 31
Own Kudos:
605
 [10]
Given Kudos: 16
Posts: 31
Kudos: 605
 [10]
2
Kudos
Add Kudos
8
Bookmarks
Bookmark this Post
User avatar
jamifahad
Joined: 03 Mar 2010
Last visit: 14 Mar 2015
Posts: 257
Own Kudos:
Given Kudos: 22
Posts: 257
Kudos: 1,481
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
BDSunDevil
Joined: 13 May 2011
Last visit: 24 Dec 2017
Posts: 142
Own Kudos:
Given Kudos: 11
Concentration: Supply Chain, Logistics
WE 1: IT 1 Yr
WE 2: Supply Chain 5 Yrs
Posts: 142
Kudos: 522
Kudos
Add Kudos
Bookmarks
Bookmark this Post
avatar
Vijayeta
Joined: 14 Jan 2014
Last visit: 24 May 2016
Posts: 8
Own Kudos:
Given Kudos: 60
Posts: 8
Kudos: 250
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Please explain it.
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 03 Nov 2024
Posts: 96,505
Own Kudos:
673,823
 [3]
Given Kudos: 87,899
Products:
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 96,505
Kudos: 673,823
 [3]
1
Kudos
Add Kudos
2
Bookmarks
Bookmark this Post
The cost of delivery for an order of desk chairs was $10.00 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 ?

According to the rule given in the stem the cost of delivery for n chairs is $10+$1*(n-1)=9+n.

(1) The delivery cost for the order totalled more than $30.00 --> 9+n>30 --> n>21, so n may or may not be more than 24. not sufficient.

(2) The average (arithmetic mean) delivery cost of the n chairs was $1.36 --> (average cost)=(total cost)/(# of chairs)=(9+n)/n. We are told that (9+n)/n=1.36 --> we can find the exact numerical value of n. Sufficient.

Answer: B.

Similar questions to practice:
DS:
a-certain-store-sells-chairs-individually-or-in-sets-of-130903.html
a-taxi-company-charges-f-cents-for-the-first-mile-of-the-139875.html
for-each-order-a-certain-company-charges-a-delivery-fee-d-143882.html
for-each-landscaping-job-that-takes-more-than-4-hours-a-85026.html
beth-s-bank-charges-a-service-fee-on-a-regular-checking-89718.html
to-instal-a-cable-television-in-a-home-a-certain-cable-comp-131751.html
the-cost-of-delivery-for-an-order-of-desk-chairs-was-124235.html
for-each-customer-a-bakery-charges-p-dollars-for-the-first-35469.html
a-taxi-company-charges-f-cents-for-the-first-mile-of-the-139875.html
if-bob-produces-36-or-fewer-in-a-week-he-is-paid-x-dollars-88217.html

PS:
to-mail-a-package-the-rate-is-x-cents-for-the-first-pound-144264.html
if-a-taxicab-charges-x-cents-for-the-first-1-9-mile-and-x-97525.html
louie-takes-out-a-three-month-loan-of-1000-the-lender-101506.html
a-certain-telephone-company-offers-two-plans-a-and-b-under-126763.html
a-certain-taxi-company-charges-3-10-for-the-first-1-5-of-a-56649.html
an-auction-house-charges-a-commission-of-15-on-the-first-133397.html
to-mail-a-package-the-rate-is-x-cents-for-the-first-pound-144264.html
at-a-certain-supplier-a-machine-of-type-a-costs-20-000-and-97410.html
for-every-order-a-certain-mail-order-company-charges-a-ship-149154.html
last-month-a-certain-music-club-offered-a-discount-to-134496.html
each-week-harry-is-paid-x-dollars-per-hour-for-the-first-131475.html
a-certain-library-assesses-fines-for-overdue-books-as-follow-127007.html
a-certain-company-retirement-plan-has-a-rule-of-109708.html
according-to-the-table-of-shipping-rates-above-86627.html
the-cost-of-a-certain-phone-call-was-0-75-for-the-first-164658.html

OPEN DISCUSSION OF THIS QUESTION IS HERE: the-cost-of-delivery-for-an-order-of-desk-chairs-was-124235.html
Moderator:
Math Expert
96505 posts