Ms. Quarles gave the same math unit test to all her classes. She grades 25% of the tests, which is 30 papers. How many students does Ms. Quarles have in total?(1 point)

Question

n=

students

Answer 1

To find the total number of students Ms. Quarles has, we can set up the following equation based on the information given:

Since Ms. Quarles grades 25% of the tests, and this amounts to 30 papers, we can express this as:

\[ 0.25 \times n = 30 \]

where \( n \) is the total number of students.

To find \( n \), divide both sides of the equation by 0.25:

\[ n = \frac{30}{0.25} \]

Calculating this gives:

\[ n = 30 \times 4 = 120 \]

Therefore, Ms. Quarles has a total of

\[ \boxed{120} \]

students.