Task: Question Answering
Input (English): Problem: a furniture dealer purchased a desk for $ 150 and then set the selling price equal to the purchase price plus a markup that was 25 % of the selling price . if the dealer sold the desk at the selling price , what was the amount of the dealer ' s gross profit from the purchase and the sale of the desk ? 
Options: a ) 40 % , b ) 38 % , c ) 36 % , d ) 33.33 % , e ) 35 %
Output (English): d