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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## A collection of books went on sale. . . . tagged by: rolandprowess ##### This topic has 5 expert replies and 0 member replies ## A collection of books went on sale. . . . A collection of books went on sale, and 2/3 of them were sold for$2.50 each. If none of the 36 remaining books were sold, what was the total amount received for the books that were sold?

A) $180 B)$135
C) $90 D)$60
E) $54 The OA is A. 36 is 1/3 of the total of books? Am I right? ### GMAT/MBA Expert Legendary Member Joined 14 Jan 2015 Posted: 2667 messages Followed by: 122 members Upvotes: 1153 GMAT Score: 770 Vincen wrote: A collection of books went on sale, and 2/3 of them were sold for$2.50 each. If none of the 36 remaining books were sold, what was the total amount received for the books that were sold?

A) $180 B)$135
C) $90 D)$60
E) $54 The OA is A. 36 is 1/3 of the total of books? Am I right? Yep. If 36 is 1/3 of the total, then 2/3 of the total would be double 36, or 72. So we want 72* 2.50. Well, 72*2 is 144, so we know the answer is more than that. Has to be A _________________ Veritas Prep | GMAT Instructor Veritas Prep Reviews Save$100 off any live Veritas Prep GMAT Course

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### GMAT/MBA Expert

Elite Legendary Member
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Posted:
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GMAT Score:
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Hi Vincen,

The answer choices to this question are 'spread out' enough that you can use approximation to get to the correct answer. You are correct that 36 books represents 1/3 of the total books. If we 'round down' to 30, and 1/3 of the books = 30, then 2/3 = 60. At $2.50 each, 60 books would be$150. Since we know that were would actually be MORE than 60 books sold though, the total revenue would have to be GREATER than $150. There's only one answer that fits... Final Answer: A GMAT assassins aren't born, they're made, Rich _________________ Contact Rich at Rich.C@empowergmat.com ### GMAT/MBA Expert GMAT Instructor Joined 04 Oct 2017 Posted: 551 messages Followed by: 11 members Upvotes: 180 Vincen wrote: A collection of books went on sale, and 2/3 of them were sold for$2.50 each. If none of the 36 remaining books were sold, what was the total amount received for the books that were sold?

A) $180 B)$135
C) $90 D)$60
E) $54 The OA is A. 36 is 1/3 of the total of books? Am I right? Hi Vincen, Let's take a look at your question. You are correct that 36 is actually 1/3 of the total books. Let 'x' be the total books then we can write: x (1/3) = 36 x= (3)(36) = 108 It means the collection of books contains a total of 108 books. The question states that 2/3 of them were sold each of$2.50

Number of sold books = 108 x (2/3)
= 36 x 2 = 72 books

Now we can calculate the total amount received for the books that were sold.
= 72 x 2.50 = $180 Therefore, Option A is correct. I am available if you'd like any followup. _________________ GMAT Prep From The Economist We offer 70+ point score improvement money back guarantee. Our average student improves 98 points. Free 7-Day Test Prep with Economist GMAT Tutor - Receive free access to the top-rated GMAT prep course including a 1-on-1 strategy session, 2 full-length tests, and 5 ask-a-tutor messages. Get started now. ### GMAT/MBA Expert GMAT Instructor Joined 25 Apr 2015 Posted: 2801 messages Followed by: 18 members Upvotes: 43 Vincen wrote: A collection of books went on sale, and 2/3 of them were sold for$2.50 each. If none of the 36 remaining books were sold, what was the total amount received for the books that were sold?

A) $180 B)$135
C) $90 D)$60
E) $54 Since 2/3 of the books were sold, 1/3 of them were not, and that represents the 36 remaining books. We see that 72 books were sold (since 2/3 is twice 1/3, and 72 is twice 36). Thus, 72 x 2.50 =$180 was made on the sale of those books.

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scott@targettestprep.com

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### GMAT/MBA Expert

GMAT Instructor
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Vincen wrote:
A collection of books went on sale, and 2/3 of them were sold for $2.50 each. If none of the 36 remaining books were sold, what was the total amount received for the books that were sold? A)$180
B) $135 C)$90
D) $60 E)$54

The OA is A.

36 is 1/3 of the total of books? Am I right?
You are right!

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