Jane produces custom greeting cards using six distinct work elements. She

would like to produce $12$ cards in each $8-$hour card$-$making session. The figure

to the right details each work element and its associated durations in minutes as

well as their precedence relationships.

a$.$ What cycle time is required to satisfy the required output rate? $40$

minutes$/$card$.($Enter your response as an integer.$)$

b$.$ What is the theoretical minimum number of workstations required? $2$

stations. $($Enter your response rounded up to the next whole number.$)$

c$.$ If Jane identifies a five$-$station solution, what is the associated efficiency and

balance delay? $($Enter your responses as percentages rounded to one

decimal place.$)$

Efficiency: $\%.$

Balance delay: $\%.$