There are x benches and y students in an auditorium. When a bench is seated with 3 students, 18 are left standing. If a bench is seated with 4 students, 3 benches would be empty.
a. Write 2 equations showing the relationship between x benches and y students
b. Find the number of benches and students

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x- benches, y-students
y=3x+18
x-3=y/4

Thanks, what about b?

you need to try to solve it by yourself :-) I will help you if you will need it.

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