Answer:
The ratio of employees that work at night to the total number of employees would be 18:34 or 18/34.
Explanation:
You can find out the number of employees that work at night by subtracting the total number of employees by the number of employees that work during the day time. You would find out that 18 employees work at night time. With that information, you can then conclude that 18:34 is the ratio of employees that work at night to the total number of employees.