Atotal of 60 students in brooke's school are taking a spanish class this year. this is 25% more than the number of students who take a spanish class last year. is the answer 45 or 48? why?

Number of students taking Spanish class this year in Brooke's school = 60
Percentage increase in the number of students
taking Spanish class from last year = 25%
Then
Number of students that are taking Spanish
class more than last year = 25/100 * 60
                                          = 15
Then
The number of students that took Spanish class last year = 60 - 15
                                                                                             = 45 students
So the number of students that took Spanish class last year was 45. I hope the answer is clear to you and the procedure is also easy for you to understand.