Task: Question Answering
Input (English): Problem: a shopkeeper has 280 kg of apples . he sells 40 % of these at 20 % profit and remaining 50 % at 30 % profit . find his % profit on total . 
Options: a ) 23 % , b ) 25 % , c ) 26 % , d ) 28 % , e ) 35 %
Output (English): a