There are 21 students in class one of the sixth grade participating in the tug-of-war competition, and the other 35 students form a "cheering team". How many percent of the class take part in the tug-of-war competition?
六年级一班有21名学生参加拔河比赛，其他35名学生组成"拉拉队"，参加拔河比赛的人数占全班人数的百分之几？
<gadget id="calculator">21 + 35</gadget>
<output>56</output>

<gadget id="calculator">21 / 56</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>