Four students spent time volunteering last weekend. The table shows how much time each student spent volunteering.

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02-03-2017
Mathematics

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Four students spent time volunteering last weekend. The table shows how much time each student spent volunteering.

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taskmasters taskmasters · Answer 1 · 2017-03-16T22:12:15+01:00

I found a similar problem. This is its table:
Volunteering
Student Time(hours)
Amy 4 5/6
Beth 6 1/2
Victor 5 3/4
Cal 5 2/3

Match each pair of students with the difference between how much time they spent volunteering.

Amy and Victor : 11/12 HOURS
Amy: 4 5/6 → 29/6 ; Victor: 5 3/4 → 23/4
29/6 - 23/4 = 29/6(2/2) - 23/4(3/3) = 58/12 - 69/12 = -11/12

Cal and Beth : 5/6 HOURS
Cal : 5 2/3 → 17/3 ; Beth: 6 1/2 → 13/2
17/3 - 13/2 = 17/3(2/2) - 13/2(3/3) = 34/6 - 39/6 = -5/6

Beth and Victor : 3/4 HOURS
Beth: 6 1/2 → 13/2 ; Victor: 5 3/4 → 23/4
13/2 - 23/4 = 13/2(2/2) - 23/4(1/1) = 26/4 - 23/4 = 3/4