A bookseller sells his books at a 20% markup in price. If he sells a book for $36.00, how much did he pay for it?  Choose the correct choice from the following options.
A) $34.40	B) $34.00	C) $32.00	D) $30.00	E) $35.00
Let the cost price of book = x   Selling price of book = 36$   Markup % = 20   (120/100)x = 36   =&gt; x = 30   Answer $30.00
<result>D</result>
A bookseller sells his books at a 20% markup in price. If he sells a book for $36.00, how much did he pay for it?