Answer: $31.03
The total money spent on 36 students and 2 teachers is $845.13
The amount spent on lunch for the students is $316.44
The total number of students present for the zoo trip is 36
The amount of money spent onlunch for each student = total amount spent on the students divided by the total number of students
The amount of money = $316.44 /36
The amount of money spent on lunch for each student = $8.79
Since the total number of students and teachers going for the zoo trip is 38
A sum of $845.13 was paid for their passes
The amount of money spent on each person = $845.13 / 38
The amount of money spent on each person = $22.24
The amount spent for pass and lunch for each student = 8.79 + 22.24
= $31.03
The answer is $31.03