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shashank.ism: Legendary Member; Posts: 1022; Joined: Mon Jul 20, 2009 11:49 pmFollowed by: 2 members; Location: Gandhinagar; Thanked: 41 times

by shashank.ism » Mon Feb 08, 2010 9:09 am

In order to sell his old books, which were priced at Rs. 63 per book, Ravinder reduced the price per book by a whole number of rupees such that the final price per book is less than the initial price per book. Now, the whole lot of old books was sold for Rs. 4914. What is the minimum possible number of ld books in the lot that Ravinder so ld?

a) 209
b) 143
c) 151
d) 91
e) 22

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Source: Beat The GMAT — Problem Solving | Mon Feb 08, 2010 9:09 am

ajith: Legendary Member; Posts: 1275; Joined: Thu Sep 21, 2006 11:13 pmFollowed by: 2 members; Location: Arabian Sea; Thanked: 125 times

by ajith » Mon Feb 08, 2010 10:05 am

shashank.ism wrote:In order to sell his old books, which were priced at Rs. 63 per book, Ravinder reduced the price per book by a whole number of rupees such that the final price per book is less than the initial price per book. Now, the whole lot of old books was sold for Rs. 4914. What is the minimum possible number of ld books in the lot that Ravinder so ld?

a) 209
b) 143
c) 151
d) 91
e) 22

D (all the options higher 209,143 and 151 doesnt give integers when divides 4914 does not give integers)

4914/91 = 54

Price = 54
No of books = 91

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harsh.champ: Legendary Member; Posts: 1132; Joined: Mon Jul 20, 2009 3:38 amFollowed by: 6 members; Location: India; Thanked: 64 times; GMAT Score:760

by harsh.champ » Mon Feb 08, 2010 10:08 am

shashank.ism wrote:In order to sell his old books, which were priced at Rs. 63 per book, Ravinder reduced the price per book by a whole number of rupees such that the final price per book is less than the initial price per book. Now, the whole lot of old books was sold for Rs. 4914. What is the minimum possible number of ld books in the lot that Ravinder so ld?

a) 209
b) 143
c) 151
d) 91
e) 22

__________________________

Let the no. of books be b.
Price per book = Rs.63
Let the reduced price = Rs.x
b*x = 4914

After this ,I am stuck.

Shashank,can you please check if something is missing in the problem .

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