There are 45 students in Class 5, 15 of whom participated in the "Drum Team" activity group. What percentage of the whole class is the number of people participating in the drum team activity group?
五1班有学生45人，其中15人参加了"鼓号队"活动小组．参加鼓号队活动小组的人数占全班人数的几分之几？
<gadget id="calculator">15 / 45</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>