The Physics class is going to the opening of Fermilab. There is a budget of $100 for the outing and it can accommodate 100 people. The admission price is as follows:

Teachers: $10
Chaperones: $2.50
Students: $0.50

Several Senior students are going along to help the teachers. What is the optimal number of teachers, chaperones and students that will be going if all 100 seats are to be filled and all the $100 is to be spent?

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The Answer to move on is the MAXIMUM amount of STUDENTS.

HINT: Your answer will be between 1 and 99.