Answer:
5 groups of 36 with one group with 37.
Hope this helps!
Explanation:
35 students × 3 classes = 105 total number of third graders
105 third graders + 112 fourth graders = 217 total number of students
217 students ÷ 6 groups = 36.16666... students in each group
Because students cannot be decimals or fractions and have to be whole, there will be 5 groups of 36 with a 6th group with 37 students.
36 + 36 + 36 + 36 + 36 + 37 = 217