Question

12 copies of a book were sold for Rs. 1800, thereby gaining the cost price of 3 copies. The cost price of a copy is

a) Rs. 120
b) Rs. 150
c) Rs. 1200
d) Rs. 1500

​

Answer 1

Answer:

hii

your answer is here !

Step-by-step explanation:

option (a) is right answer !

follow me !

Answer 2

We know that..

》 Profit = Selling price - Cost price

Selling price = Profit + Cost price

Selling price of books = Rs.1800

Profits of 12 books = 3 of celling price

=> 3 Celling price (CP)

So,

=> 1800 = 3CP + 12CP

=> 1800 = 15CP

=> 1800/15 = CP

=> 120 = CP

=> CP = Rs. 120

______________________________

Option a) Rs. 120

_____________ [ ANSWER ]

______________________________