All arriving input loan application forms $($hereafter "forms"$)$ to a process undergo a task T$1(3$ minutes$)$ performed by Staff $A.$ The forms after the task T$1$ is separated into two parts la$,$ lb$.$ Staff B performs T$2(2$ minutes$)$ on la and Staff C performs task T$3(4$ minutes$)$ on lb$.$ After T$2$ and $T3,$ la and $lb$ are joined and goes through task $T4$ which can be performed either by Staff D or Staff E$.$ Staff D takes $5$ minutes while Staff E takes $4$ minutes to perform task T$4.$ After T$4,$ the input is again re$-$separated into la and lb$.$ Staff F performs T$5(2$ minutes$)$ on la and Staff G performs task $T6(5$ minutes$)$ on $Ib.$ After $T5$ and $T6,la$ and $Ib$ are joined and the combined form leaves the process. Q$1.)$What is the actual flow time $($in minutes$)$ if the input to the process is $18$ forms per hour? part b$.)$ what is the flow time efficiency if the input to proccess ie $18$ forms per hour?