Last visit was: 22 Apr 2026, 20:32 It is currently 22 Apr 2026, 20:32
Home
Messages
Tests
Schools
Events
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
User avatar
vcbabu
User avatar
Joined: 04 Sep 2006
Last visit: 06 Mar 2016
Posts: 99
Own Kudos:
359
Posts: 99
Kudos: 359
gross profit 24 May 2009, 09:03
Kudos
Add Kudos
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
N
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 1 sessions

History

Date
Time
Result
Not Attempted Yet
A bookstore sells new book for $13 each and used book for $5 each. The gross profit on a new book is 30% of the cost. The gross profit on a used book is 100% of the cost. How much gross profit can the bookstore earn from a $67 sale?



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Problem Solving (PS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
User avatar
humans
User avatar
Joined: 12 Apr 2006
Last visit: 03 Jan 2021
Posts: 107
Own Kudos:
64
Given Kudos: 17
Location: India
Posts: 107
Kudos: 64
gross profit 24 May 2009, 11:26
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Sale on $67 can be in this way

13 + 13 + 13 + 13 + 5 + 5 + 5 = 67

On $13 sale bookstore earns $3 gross profit (30% on cost) and on $5 sale it earns $2.5 (100% on cost).

So total profit comes to

3 + 3 + 3 + 3 + 2.5 + 2.5 + 2.5 = 19.5
User avatar
MontrealGirl
User avatar
Joined: 15 Feb 2009
Last visit: 13 Jun 2009
Posts: 12
Posts: 12
Kudos: 0
gross profit 24 May 2009, 14:26
Kudos
Add Kudos
Bookmarks
Bookmark this Post
humans
Sale on $67 can be in this way

13 + 13 + 13 + 13 + 5 + 5 + 5 = 67

On $13 sale bookstore earns $3 gross profit (30% on cost) and on $5 sale it earns $2.5 (100% on cost).

So total profit comes to

3 + 3 + 3 + 3 + 2.5 + 2.5 + 2.5 = 19.5
Show more

hey,

how did u get what r in red?
User avatar
tkarthi4u
User avatar
Joined: 08 Jan 2009
Last visit: 12 Aug 2013
Posts: 141
Own Kudos:
320
Given Kudos: 5
Concentration: International business
Posts: 141
Kudos: 320
gross profit 24 May 2009, 19:15
Kudos
Add Kudos
Bookmarks
Bookmark this Post
13 and 5 are prime number. By trail and error i got to 67.
User avatar
humans
User avatar
Joined: 12 Apr 2006
Last visit: 03 Jan 2021
Posts: 107
Own Kudos:
64
Given Kudos: 17
Location: India
Posts: 107
Kudos: 64
gross profit 25 May 2009, 01:00
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Quote:
hey,

how did u get what r in red?
Show more

I assumed couple of things in the question, which I am not sure if right way to do, but otherwise question was also not very clear in details.

As we know the total sale amount is 67 and it comprises $13 and $5 sale.

So I assumed it would comprise atleast one $13 sale so 67-13 = 54 but this is not a multiple of 5 so there may be more than one sale of $13. Tried 54-13 = 41 but this is again not a multiple of 5 so keep on doing this until I get the number which is multiple of 5, which became the number of sales of $5.

Hope this clarifies.



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Problem Solving (PS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
Moderator:
Bunuel
Math Expert
109754 posts