The bottom row and right column are representing totals of previous cells and the grand total is 82 as indicated in the question.
Find the missing numbers in the following order:
- Teachers/Apples = 24 - 22 = 2
- Teachers/Oranges = 25 - 24 = 1
- Total/Total = 82 (given)
- Teachers/Total = 2 + 4 + 1 = 7
- Students/Total = 82 - 7 = 75
- Students/Grapes = 75 - 24 - 22 = 29
- Totals/Grapes = 29 + 4 = 33