$12.$ What is the capacity of this process? Express your answer in units per hour, round to two decimals if needed.

$13.$ Assume that the process is empty at noon, and from noon to $3$ pm one unit enters the process in every $5$ minutes, with no variability in inter$-$arrival times. At $2$ pm$,$ how many units will be waiting to be processed?

Round your answer to two decimals if needed. If there will be no units waiting, enter zero.

$14.$ As before, assume that the process is empty at noon, and from noon to $3$ pm one unit enters the process in every $5$ minutes. On average, how long does the flow unit arriving between noon to $3$ pm will wait to be served? Express your answer in minutes, round to two decimals if needed