Let's dive into a specific process at the ice cream shop for this and the remaining questions.

The manager is trying to better understand the way that milkshakes are made. They would like your help in line balancing the milkshake$-$making process. Info about the process included as follows. It may be helpful to try to create a process flow diagram that clearly outlines the precedence relationships involved.

Label

Task

Predecessor$($s$)$

Time $($seconds$)$

A

Gather ingredients

None

$25$

B

Measure milk

A

$35$

C

Measure ice cream

A

$20$

D

Pour ingredients into blender cup

B$,$ C

$40$

E

Blend

D

$60$

F

Pour into glass

E

$15$

G

Clean station

F

$55$

H

Deliver to customer

F

$20$

Total Time

$270$

Assume a $12-$hour shift $($and$,$ for simplicity's sake, assume that customers are only ordering milkshakes during this shift$).$ If you have a customer demand of $675$ milkshakes, what is your takt time $($in seconds$)$ for this shift? Round your answer to the nearest second.Continuing with the ice cream shop example, what is the theoretical minimum number of workstations you will need to satisfy the milkshake demand in one shift? Round up to the nearest workstation.