Task: Question Answering
Input (English): Problem: there are two cars . one is 100 miles north of the other . simultaneously , the car to the north is driven westward at 10 miles per hour and the other car is driven eastward at 15 miles per hour . how many miles apart are the cars after 3 hours ? 
Options: a ) 125 , b ) 150 , c ) 200 , d ) 225 , e ) 250
Output (English): a