Application in the following process below:

step $1$: $(30$ seconds per unit$)$

step $2$: $(20$ seconds per unit$)$

step $3$: $(15$ seconds per unit$)$

step $4(10$ seconds per unit$)$

Answer questions below based on the information above:

$1.)$ What is the utilization of Step $3$ if demand is $5$ units per minute?

a$.3$

b$.0\mathrm{.}33$

c$.1$

d$.0\mathrm{.}5$

e$.0\mathrm{.}8$

$2,)$ What is the labor utilization of the process?

a$.50\%$

b$.62\mathrm{.}5\%$

c$.67\%$

d$.100\%$

$3.)$ What is the implied utilization of Step $2$ if demand is $5$ units per minute?

a$.60\%$

b$.67\%$

c$.100\%$

d$.167\%$

$4.)$ If a second worker is added to Step $3,$ what is the process capacity now?

a$.2$ units per minute

b$.3$ units per minute

c$.5$ units per minute

d$.6$ units per minute