$($ANSWER THE BLANKS I DONT HAVE FILLED OUT, I KNOW THOSE ARE CORRET$)$ A manager wants to assign tasks to workstations in order to achieve an hourly output rate of four units. The department uses a

working time of $56$ minutes per hour.

a$.$ Assign the tasks shown in the above precedence network $($times are on the nodes and are in minutes$)$ to workstations using the

following heuristic rules: $($i$)$ "Assign the task with the largest positional weight." $($ii$)$ Tiebreaker: "Assign the task with the longest time." If

a tie still exists, choose randomly. $($Do not leave any empty spaces; input a $0$ wherever it is required.$)$

b$.$ What is the efficiency? $($Do not round intermediate calculations. Round the final answer to $1$ decimal place.$)$

Efficiency$($AN