The number of boys in a school is 120. If the ra tio of boys to girls is 2:3, find the total number of student in the school

If the ratio of boys to girls is 2:3, then the total ratio representing the number of students in the school is 2+3 = <<2+3=5>>5

Since the number of boys in the school is 120, the total number of students in the school is 120/2*5 = <<120/2*5=300>>300. Answer: \boxed{300}.