Answer: Each student will get an amount of $12.75 to spend on lunch.
Explanation:
Since we have given that
Number of fifth grade students = 90
Amount given by each student to cover admission to the theater = 9.25
So, Total amount given by all of the students is given by
Amount given by all of the students for lunch admission =$315
Total amount submitted by the students to the teacher regarding trip is given by

So, Each student will get an equal amount to spend on lunch is given by

Hence, each student will get an amount of $12.75 to spend on lunch.