Answer :
Given:
The number of employees working in the office = 18
The total employees = 48
[tex]\begin{gathered} a+b=48 \\ \text{Here a = 18} \\ 18+b=48 \\ b=30 \end{gathered}[/tex]the number of employees who work in the warehouse = 30
The ratio of the employees to work in the office to the employees who work in the warehouse is,
[tex]a\colon b=18\colon30=\frac{18}{30}=\frac{3}{5}=3\colon5[/tex]Answer: option A) 3:5