A) Rs. 120
B) Rs. 150
C) Rs. 1200
D) Rs. 1500
Correct Answer: A
Solution :
Let the cost price of 1 book be Rs. x. \[\therefore \]Cost price of 3 books = Rs.3x and Cost price of 12 books = Rs. 12x Selling price of 12 books = Rs.1800 \[\therefore \] Rs. 12 x + Rs. 3 x = Rs. 1800 \[\Rightarrow \] 15x = 1800 \[\therefore \] \[x=\frac{1800}{15}=120\] The cost price of each book = Rs. 120You need to login to perform this action.
You will be redirected in
3 sec