Draw your self a table.
On top two fields Male and Female, on the side Clerical and Not Clerical, fill in the gaps from the information above.
Spoiler:
In an office of 75 employees, 60 are female. Of the 75 employees, there are 30 clerical workers, 10 of whom are male. If an employee is selected at random, what is the probability of selecting a female cerical worker?
The answer is 4/15 but I have no idea the steps of how to find it!