Task: Question Answering
Input (English): Problem: stacy and heather are 20 miles apart and walk towards each other along the same route . stacy walks at constant rate that is 2 mile per hour faster than heather ' s constant rate of 5 miles / hour . if heather starts her journey 24 minutes after stacy , how far from the original destination has heather walked when the two meet ? 
Options: a ) 5 miles , b ) 7 miles , c ) 9 miles , d ) 10 miles , e ) 12 miles
Output (English): b