The following table details the tasks required for Indiana$-$based Frank Pianki Industries to manufacture

a fully portable industrial vacuum cleaner. The times in the table are in minutes. Demand forecasts

indicate a need to operate with a cycle time of $11$ minutes.

a$-$b$)$ One of the possible assignment of tasks to workstations is shown correctly in

The efficiency of the assembly line with $3$ workstations $=,\%($enter your response rounded to two

decimal places$).$

c$)$ The goal is to have $100\%$ efficiency. Is this possible?

d$)$ The theoretical minimum number of workstations $=$

$($round your response up to the next

whole number$).$