The number of students in Class 1 is between 30 and 60. Among them (2/3) like to skip rope, and (4/7) students like to jump rubber bands. How many people are there in Class 1?
六1班的学生数在30～60人之间，其中(2/3)喜爱跳绳，(4/7)同学喜爱跳皮筋，六1班有多少人．
<result>42</result>