I have this table: Four students spent time volunteering last weekend. The table shows how much time each student spent volunteering.

Volunteering
Student Time (in hours)
Amy 4
8
9

Beth 6
1
2

Victor 5
3
4

Cal 5
4
5

For each pair of students, enter the difference between how much time they spent volunteering. Enter each answer as a fraction in simplest form.

Amy and Victor have a difference of hour(s) between their times.

Cal and Beth have a difference of hour(s) between their times.

Beth and Victor have a difference of hour(s) between their times.