Task: Question Answering
Input (English): Problem: a fruit - salad mixture consists of apples , peaches , and grapes in the ratio 12 : 8 : 7 , respectively , by weight . if 54 pounds of the mixture is prepared , the mixture includes how many more pounds of apples than grapes ? 
Options: a ) 15 , b ) 10 , c ) 9 , d ) 6 , e ) 4
Output (English): b