In an examination 60 candidates passed intergrated science or mathematics if 15 passed both subjects and 9 more passed mathematics than science 1:find the number of candidates who passed in each subjects 2: the probability that a student passed exactly one subject

Answer 1

If x passed science, then
x + x+9 - 15 = 60

60-15 = 45 passed only one subject

Answer 2

I am not convinced with the answer given

Answer 3

Solution

Answer 4

x+x+9=60