There are 150 students in the fifth grade, and 60 students are selected to participate in the mathematics competition. What percentage of the number of students participating in the mathematics competition is the whole grade?
五年级有150名学生，选出60人参加数学竞赛，参加数学竞赛的人数是全年级人数的几分之几？
<gadget id="calculator">60 / 150</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>