sentence1: If the distance between their homes is more than 70 kilometers , Maxwell ' s walking speed is 4 km / h , and Brad ' s running speed is 6 km / h , what is the distance traveled by Brad ?
sentence2: If the distance between their homes is 80 kilometers , Maxwell ' s walking speed is 4 km / h , and Brad ' s running speed is 6 km / h , what is the distance traveled by Brad ?