A bookseller sells his books at a 10% markup in price. If he sells a book for $11.00, how much did he pay for it? Select the correct option:	A) $ 14.40	B) $ 14.00	C) $ 10.00	D) $ 9.60	E) $ 5.00

Rationale: "let the cost price of book = x selling price of book = 11 $ markup % = 10 ( 110 / 100 ) x = 11 = > x = 10 answer c"
Answer: C