Ms.Quarles gives the same math unit test to all her classes she grades 25% of the test.which is 30 papers.how many students does Ms.Quarles have in total?
Ms. Quarles has a total of 120 students.
30 papers is 25% of the total number of students, so to find the total number of students, you can set up a proportion:
30/0.25 = x/1
Solving for x:
x = 30 / 0.25
x = 120
Therefore, Ms. Quarles has a total of 120 students.