Question

On Thursday 30 students went to afterschool tutoring on Friday six students went what is the percent decrease in the number of students who went to tutoring

A. 20%
B. 80%
C. 400%
D. 500%
I know the answer is B. but here is the question I need help with.
Brittany chose A as the correct answer. how did she get this answer?
Please help and thanks

Answer 1

You need to find the percent of Thursday and the percent of Friday and then subtract the answers

Answer 2

she probably found the percent of those that showed up friday