A shopkeeper bought a book during a discount for $x. He sold the book for a profit at $y, 40% off the marked price. Which of the following options are true?

Indicate all that apply


A. The profit the shopkeeper made was $y

B. The profit the shopkeeper made was 0.4M – x, where M is the marked price

C. The selling price of the book was 0.6M, where M is the marked price of the book.

D. The profit the shopkeeper made by selling the book was 0.6M – x, where M is the marked price of the book.