Answer:
The answer to your question is  2 7/24
Step-by-step explanation:
Data
Hank's cows = 4 3/4   and  4  1/8
Debra's cows = 5 1/2  and  5 2/3
Process
1.- Convert the mixed functions to improper fractions
Hank's           (16 + 3)/4  = 19/4           (32 + 1)/8 = 33/8
Debra's          (10 + 1)/2 = 11/2              (15 + 2)/3 = 17/3
2.- Sum up Hank's milk and Debra's milk
Hank's       19/4 + 33/8 = 38/8 + 33/8 = 71/8
Debra's      11/2 + 17/3 = 33/6 + 34/6 = 67/6
3.- Subtract Hank's milk to Debra's milk
                  67/6 - 71/8 = (268 - 213)/24
                                     = 55/24
-Convert into a mixed fraction
                                 2
                       24   55
                                 7
                                       55/24 = 2 7/24
4.- Conclusion
Debra milked 2 7/24 more milk than Hank