There are 9 students on the varsity academic team and 15 students on the junior varsity academic team. What is the ratio of students on the varsity team to students on the junior varsity team? Express the ratio as a fraction in lowest terms.

The ratio of students on the varsity team to students on the junior varsity team is 9:15.

To express this ratio as a fraction in lowest terms, divide both numbers by their greatest common divisor:

9 ÷ 3 = 3
15 ÷ 3 = 5

Therefore, the ratio of students on the varsity team to students on the junior varsity team expressed as a fraction in lowest terms is 3/5.