Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 25 May 2017, 23:49

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# A person sells clothes. At the price of $20, he can sell 100  post reply Question banks Downloads My Bookmarks Reviews Important topics Author Message Senior Manager Joined: 22 May 2006 Posts: 369 Location: Rancho Palos Verdes Followers: 1 Kudos [?]: 122 [0], given: 0 A person sells clothes. At the price of$20, he can sell 100 [#permalink]

### Show Tags

04 Aug 2006, 23:55
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A person sells clothes. At the price of $20, he can sell 100 clothes. For each dollar the price decreases, 10 more clothes will be sold. What can be his maximun revenue to obtain? A. 2000 B. 2240 C. 2250 D. 2270 E. 2300 _________________ The only thing that matters is what you believe. Last edited by freetheking on 05 Aug 2006, 01:20, edited 2 times in total. Director Joined: 13 Nov 2003 Posts: 789 Location: BULGARIA Followers: 1 Kudos [?]: 52 [0], given: 0 ### Show Tags 05 Aug 2006, 00:52 20*100=2000 19*110=2090 18*120=2160 17*130=2210 16*140=2240 15*150=2250 14*160=2240 so at price of 15 the revenue would be max 2250 Senior Manager Joined: 22 May 2006 Posts: 369 Location: Rancho Palos Verdes Followers: 1 Kudos [?]: 122 [0], given: 0 Re: PS:Maximun revenue [#permalink] ### Show Tags 05 Aug 2006, 01:13 How about following approach?? F(n) = (20-n)(100+10n) F(n) = 2000+100n-10n^2 = -10(n^2-10n-200) = -10[(n-5)^2-225] (concave down.. when n=5 maximun value) F(5) = -10*-225 = 2250 _________________ The only thing that matters is what you believe. Last edited by freetheking on 05 Aug 2006, 01:21, edited 1 time in total. Director Joined: 13 Nov 2003 Posts: 789 Location: BULGARIA Followers: 1 Kudos [?]: 52 [0], given: 0 ### Show Tags 05 Aug 2006, 01:16 Not bad, but the Q asks about the PRICE not the revenue Manager Joined: 20 Mar 2006 Posts: 200 Followers: 1 Kudos [?]: 4 [0], given: 0 Re: PS:Maximun revenue [#permalink] ### Show Tags 05 Aug 2006, 14:25 freetheking wrote: A person sells clothes. At the price of$20, he can sell 100 clothes. For each dollar the price decreases, 10 more clothes will be sold. What can be his maximun revenue to obtain?
A. 2000
B. 2240
C. 2250
D. 2270
E. 2300

@ $20 Revenue =2000 @$19 Revenue =2090 (19*110)
@ $18 Revenue =2160 (18*120) @$17 Revenue =2210 (17*130)
@ $16 Revenue =2240 (16*140) @$15 Revenue =2250 (15*150)

Hence C

Heman
Re: PS:Maximun revenue   [#permalink] 05 Aug 2006, 14:25
Display posts from previous: Sort by