There are three sixth grade classes in a certain school, each with an equal number of students. The number of boys in Class 1 is equal to the number of girls in Class 2. Boys in Class 3 account for 60% of the class. There are 72 boys in Grade 6. How many students are there in each class?
某校六年级有三个班，每班人数相等．六1班的男生人数与六2班的女生人数相等，六3男生占本班人数的60%，六年级共有72名男生，每个班级共有学生多少名．
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 + (3/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">72 / (8/5)</gadget>
<output>45</output>

<result>45</result>