Chapter Four Process Improvement

Hello! Could you please show all the steps clearly one by one and solve this problem. I am practicing for Operations Management exam by solving applications and problems, but I am stuck in this one. The way I calculate the cost of direct labor is like this: total wages per unit of time$/$flow rate, but I saw on Chegg Library that people used other formulas. I am confused. Please include all the steps and formulas you are using from a to i$.$ Thank you very much!!!

The White Tooth Device Company is a manufacturer of high$-$end electric toothbrushes.

For each toothbrush, there are a sequence of assembly steps performed by five workers.

Each worker does two tasks. Workers are paid $$15$ per hour.

roc.

a$.$ What is the labor content of a toothbrush $($seconds$)?[$LO$4-1]$

b$.$ What is the cost of direct labor for a toothbrush $($$$)?[$LO$4-1]$

$100\%$ c$.$ What is the utilization $($as a percent$)$ of worker A$?[$LO$4-1]$ rarr boffeeneac

d$.$ What is the average labor utilization of this process? $[$LO$4-1]$

e$.$ Suppose demand is $40$ toothbrushes per hour. What is the takt time $($seconds$)?$

$[$LO$4-2]$

f$.$ Suppose the takt time is $50$ seconds. What is the target manpower? $[$LO$4-2]$

g$.$ Suppose one additional employee could be hired. The new employee can be assigned

to the same set of tasks as one of the current workers. For example, the new worker

could do tasks $1$ and $2($like worker A$)$ or tasks $7$ and $8($like worker D$).$ What would

be the capacity of the process $($toothbrushes per hour$)$ after hiring the new worker?

$[$LO$4-3]$

h$.$ Suppose the company changes the assignment of tasks to workers to maximize its

capacity. Each task is still assigned to one worker and each worker is still assigned

consecutive tasks. What would be the capacity of the process $($toothbrushes per hour$)?$

$[$LO$4-4]$

i$.$ Suppose the company changes the assignment of tasks to workers to maximize its

capacity. Tasks can be assigned to multiple workers and workers can be assigned non$-$

consecutive tasks. What would be the capacity of the process $($toothbrushes per hour$)?$