In a random sample of students at a middle school 24 wanted to change the mascot and 30 wanted to keep the current mascot.
So total number of students in the sample = 30+24= 54
Number of students in random sample who wanted to keep the current mascot = 30
So out of 54 students 30 wanted to keep current mascot.
So for 1140 students = (30/54)*1140 = 633 students want to keep the currect mascot.
Answer: Third option 633 students.