Explanation:
here's your solution
=> time for Bettinia = 3.8 hrs
=> speed of her = 56 mph
=> distance covered by her = 3.8*56 = 212.8m
=> time for wills = 4.1 hrs
=> speed of wills = 52 mph
=> distance = 4.1 * 52 = 213.2m
=> wills covered more distance = 0.4 m
hope it helps