Task: Question Answering
Input (English): Problem: arun purchased 30 kg of wheat at the rate of rs . 11.50 per kg and 20 kg of wheat at the rate of 14.25 per kg . he mixed the two and sold the mixture . approximately what price per kg should be sell the mixture to make 20 % profit ? 
Options: a ) 15.12 , b ) 16.33 , c ) 16.35 , d ) 16.3 , e ) 16.32
Output (English): a