Answer:
62
Explanation:
This question is easy.
I don't know how to explain the formula as I am afraid it would be confusing, so I would just write the solution and you can analyse it.
105 - 19 = 86 (Find out how much the college would have without the more)
86 ÷ 2 = 43 (Find out male and female teachers in a seperate way without more)
43 + 19 = 62 (Female teachers)
Sorry if my explaination wasn't so accurate, I tried my best to make sure you understand it.