2 Views

Question : 12 copies of a book were sold for Rs. 1700, thereby gaining the cost price of 3 copies. The cost price of a copy of the book is:

Option 1: Rs. 120

Option 2: Rs. 150

Option 3: Rs. 1200

Option 4: Rs. 1500


Team Careers360 13th Jan, 2024
Answer (1)
Team Careers360 22nd Jan, 2024

Correct Answer: Rs. 120


Solution : Let the cost price of 1 book = Rs. $x$
Selling price of 12 books = Rs. 1800
Gain = $3x$
Selling price of 12 books – Cost price of 12 books = Gain
⇒ $1800−12x=3x$
⇒ $1800=12x+3x$
⇒ $1800=15x$
⇒ $x=120$
∴ Cost of 1 book = Rs. 120
Hence, the correct answer is Rs. 120.

Know More About

Related Questions

TOEFL ® Registrations 2024
Apply
Accepted by more than 11,000 universities in over 150 countries worldwide
Manipal Online M.Com Admissions
Apply
Apply for Online M.Com from Manipal University
GRE ® Registrations 2024
Apply
Apply for GRE® Test now & save 10% with ApplyShop Gift Card | World's most used Admission Test for Graduate & Professional Schools
View All Application Forms

Download the Careers360 App on your Android phone

Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile

150M+ Students
30,000+ Colleges
500+ Exams
1500+ E-books