Final answer:
The question seems to be missing necessary information to provide the difference between two distances, as only Victor's jogging distance is given. To find a difference or displacement in distances, typically one would subtract or add distances depending on direction and context, as illustrated in similar example problems.
Step-by-step explanation:
The student's question appears to be incomplete, as there is a reference to 'these two distances' without specifying what the other distance is that should be compared to Victor's jogging distance of 8 5/7 kilometers on Tuesday. Therefore, it is impossible to provide the difference between the two distances without the second distance. However, we can use the information given on different distance and displacement problems that relate to jogging and running in order to offer insight into how such problems are generally solved.
For instance, if a marathon runner runs 9.5 miles in one direction, 8.89 miles in another direction, and 2.333 miles in a third direction, the total distance would be the sum of all three, which should be reported to the proper number of significant figures. Similarly, for a displacement question, if Tiana jogs in one direction and then in the opposite, her displacement would be the result of vector addition of her jogging legs.