Answer:
To calculate the number of kids in Cole's math class, we can subtract the number of remaining chocolate bars from the initial number of chocolate bars and then divide the result by the number of chocolate bars given to each student.
Initial number of chocolate bars = 61
Remaining chocolate bars = 10
Number of chocolate bars given to each student = 3
Total number of chocolate bars given to students = 61 - 10 = 51
Number of kids in the class = Total number of chocolate bars given to students ÷ Number of chocolate bars given to each student
Number of kids in the class = 51 ÷ 3 = 17
Therefore, there are 17 kids in Cole's math class.