A shop keeper gives discount of 10 % on the marked price of a book, but in the bargain makes a profit of 10 %. If the marked price of the book is 𝑅s .330, the cost price of the book is:
A. 𝑅s .220
B. 𝑅s .270
C. 𝑅s .320
D. 𝑅s .380
Answer:B
A shop keeper gives discount of 10 % on the marked price of a book, but in the bargain makes a profit of 10 %. If the marked price of the book is 𝑅s .330, the cost price of the book is:
A. 𝑅s .220 B. 𝑅s .270 C. 𝑅s .320 D. 𝑅s .380