In an examination class,60 candidates pass Integrated science or Mathematics.If 15 passed both subject and 9 more passed Mathematics, than Integrated science. find

In an examination class, 60 candidates pass integrated science or mathematics. If 15 pass both subjects and 9 others pass mathematics, than integrated sciences. find (i) the number of successful candidates in each subject.

(ii) Probability that a candidate passed exactly one subject If x passed IS, then

x+9 + x - 15 = 60

(i) solve for x, then you can answer this

(b) 15 hit both, so 45/60 hit exactly one.