The total number of student can be solve by dividing the
partial student by its percentage of the overall student. Since there are 180
students in the band and it represnts 9% of the total students of the scool. So
the number of studetns are 180/0.09 = 2000 students
4:45 to 5:45 is one hour,
5:45 to 6:15 is 1/2 hour
plus 5 more minutes to get to 6:20
So:
60 + 30 + 5 = 95 minutes
Yy^2 I'm pretty sure is the answer!