There are 4 classes in the third grade of the school, and the number of students in each class is between 35 and 40. May I ask how many students there are in the third grade in this school?
学校三年级有4个班，每个班的学生人数在35至40人之间．请问这个学校三年级一共大约有多少名学生．
<result>150</result>