A simulation model of a G$/$G$/2$ queuing model was run for $10$ minutes. The area under B$($t$)$ graph is $11$ units. It is given that the total busy time of the first resource is A simulation model of a G$/$G$/3$ queuing model was run for $10$ minutes. The area under B$($t$)$ graph is $20$ units. What is the average number of busy resources?