Ms.Quarels gave the same math unit test to all her classes. She grades 25% of the test, which is 30 papers. How many students does Ms.Quarels have in total?
N= ?
To find the total number of students Ms. Quarels has, you can set up a proportion:
25% of total students = 30
25% of N = 30
Now, you can solve for N:
0.25N = 30
N = 30 / 0.25
N = 120
Ms. Quarels has a total of 120 students.