Task: Question Answering
Input (English): Problem: the product of x and y is a constant . if the value of x is increased by 50 % , by what percentage must the value of y be decreased ? 
Options: a ) 50 % , b ) 40 % , c ) 33 1 ⁄ 3 % , d ) 25 % , e ) 12 1 ⁄ 2 %
Output (English): c