Use a system of linear equations with two variables and two equations to solve

Question

185 students enrolled in a freshman-level chemistry class. By the end of the semester, 4 times the number of students passed as failed. Find the number of students who passed, and the number of students who failed

Passing students number

failing students number

Answer 1

P = 4F

P + F = 185

4F + F = 185

5F = 185

F = 185/5 = 37 students failed

P = 4(37) = 148 students passed