There are 64 seventh graders at a middle school. This is 32% of the students at the school. The sixth graders comprise 38% of the students. How many sixth graders attend middle school?
Let X be the number of students in the middle school. There are X*32% = 64 seventh graders.
So there are X = 64 / 0.32 = <<64/0.32=200>>200 students at the school.
And there are 200 *38% = <<200*38*.01=76>>76 sixth graders.
#### 76