Task: Question Answering
Input (English): Problem: a vendor sells 60 percent of the apples he had and throws away 40 percent of the remainder . the next day , the vendor sells 50 percent of the remaining apples and throws away the rest . in total , what percent of his apples does the vendor throw away ? 
Options: a ) 24 , b ) 26 , c ) 28 , d ) 30 , e ) 32
Output (English): c