Task: Question Answering
Input (English): Problem: fresh grapes contain 60 % by weight while dried grapes contain 20 % water by weight . what is the weight of dry grapes available from 30 kg of fresh grapes ? 
Options: a ) 10 kg , b ) 15 kg , c ) 20 kg , d ) 25 kg , e ) 40 kg
Output (English): b