Task: Question Answering
Input (English): Problem: the contents of a certain box consist of 72 apples and 30 oranges . how many oranges must be added to the box so that exactly 30 % of the pieces of fruit in the box will be apples ? 
Options: a ) 68 , b ) 78 , c ) 88 , d ) 138 , e ) 108
Output (English): d