0.96× 50 = 48 (person)

This only needs to be counted backwards.

Because the pass rate is equal to the number of people who have passed the exam ÷ the number of classes × 100%, it should be divided by 100% first. What comes out is the number of people who have passed the exam-the quotient of the number of classes. Then × class number = qualified number. Because dividend = quotient, dividend = quotient × divisor, qualified number is dividend and class number is divisor, the answer is 48.

I'm in grade six, too. This is my answer.

Adopt it! We are all in the sixth grade!