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's think first. Chain of thought:
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 = 200 students at the school. And there are 200 * 38% = 76 sixth graders.
Therefore, the answer is 76.