Question

A book-seller allows a discount of 10% on the advertised price of a book. A book costs Rs 600 and he wants to make a profit of 20%. He must mark the price of the book as:

Answer 1

the bookseller should sell the book at 780 rupees

Answer 2

30% of 600 =18
20%of 600= 12
marked price = 600 +12=612