It is implied from the given conditions that
Unmarried employees = 45
Unmarried employees that work full time = 30
Part time working employees = 25
Unmarried employees that work part time = 15
Married employees that work part time = 10
Thus
The probability of a part time employee = 25/85
The probability of an unmarried employee = 45/85
Hence probability that an employee works part
time or is not married = (25/85) + (45/85)
= (25 + 45) / 85
= 70 / 85
