Solution
For this case we have
6 six teachers
78 students
10 parents
We know that each bus can carry out 32 passengers
The total of students are:
6 + 78+ 10 = 94
Then we can find the number of buses that can be full with this operation:
94/32 = 2.94
And then two buses represent 32+32= 64
And the remaining are:
94 - 64= 30
Then the final answer is:
There will be 30 passengers on the bus that is not full.