Task: Question Answering
Input (English): Problem: aaron will jog from home at 4 miles per hour and then walk back home by the same route at 8 miles per hour . how many miles from home can aaron jog so that he spends a total of 3 hours jogging and walking ? 
Options: a ) 2 , b ) 10 , c ) 12 , d ) 8 , e ) 15
Output (English): d