The ratio of boys to girls in Mrs. Reiter’s music class is 2 to 3. There are 24 girls in the class. What is the total number of students in Mrs. Reiter’s music class?

16

24

40

42

If the ratio of boys to girls is 2 to 3, then there are 2 parts for boys and 3 parts for girls, and the total ratio is 2 + 3 = 5 parts.

If there are 24 girls, then each part represents 24/3 = <<24/3=8>>8 girls.
So, the total number of students in the class is 5 parts x 8 = <<5*8=40>>40 students.
Therefore, the answer is 40. Answer: \boxed{40}.