Suppose inter-arrival times were exponentially distributed with a mean of 4 minutes ( = 1/4) and service times are uniformly distributed in the range 3.5-4 minutes with a mean of 3.75 minutes ( = 1/3.75), how would you write event calendar code? (Difficult to do in Excel.)

Assume the simulation runs from t=0 to t=20 as in the hand simulation

You have to track Q(t), B(t) so you can calculate the average number in queue and average busy time at the end of t=20