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)
Let's assume Ms. Quarles has a total of x students in all her classes.
If she grades 25% of the tests, she grades 25/100 * x = 30 papers
This simplifies to x = 30 * 100/25 = 120 students.
Ms. Quarles has a total of 120 students in all her classes. Answer: \boxed{120}.
bot is right because %25 x 4 = 100,
and 30 x 4 = 120.
so total kids is 120