Ateacher gave her class two exams; 60% of the class passed the second exam, but only 48% of the class passed both exams. what percent of those who passed the second exam also passed the first exam?

we are given the probility of passing the second exam of 60% and passing the first and second exam equal to 48%. In this case, to  determine the percent of those who passed the first exam, we divide 48% by 60% using the rules of probability. The answer should be 80%