At $t$:$0,$ no customer is in line, and only one customer is being served.

The customer is arriving randomly $(a=0,b=5$min$)$ and the service time is randomly between $(a=3,b=8$min$).$

The simulation ends at $t=60$

Create an excel file and use the excel function provided. The format of the excel file should be similar to this table.

Use $=$ RAND$()(b-a)+$a and $=$ ROUND$($RAND$()*($b$-$a$)+$a$)$