There are 120 students in the sixth grade in a certain school, including 30 "three good students". What percentage of the total number of sixth grade students are "three good students"?
某校六年级共有学生120人，其中"三好学生"有30人．"三好学生"占六年级总人数的百分之几？
<gadget id="calculator">30 / 120</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>