It would be 105 students because you would divide the 280 students into 8 and then get 35, then multiply that by 3 representing the 3/8s of the students
So 6/10 is female--p (female)--3/5 40 yr old are 1/3 (2/6) and 3/4 so 1/4 prob 40 yr old is 13/12 and is adding the probability 3/5+13/12 which is 1 41/60. im not sure tho
