Collins Middle School has 280 sixth grade students. If the sixth grade is 35% of the total school, how many students are in the middle school?

So we would set up a propostion dor this problem.

You would that the 280/.35=x/1 and we would solve for x.

So we would cross multiply and get 280*1 =.35x and then take 280/.35 and that would give you x