Task: Question Answering
Input (English): Problem: a distributor sells a product through an on - line store , which take a commission of 20 % of the price set by the distributor . the distributor obtains the product from a producer at the price of $ 15 per item . what is the price that the buyer observers on - line if the distributor wants to maintain a 10 % profit on the cost of the item ? 
Options: a ) 18 , b ) 21.6 , c ) 20 , d ) 22.5 , e ) 27
Output (English): c