Review the time study summary below.

Element Description Frequency$/$

Unit

Get part from conveyor $1/1$

Get subassembly from conveyor $1/1$

Connect parts to subassembly $2/1$

Install $3$ brackets $3/1$

Assemble side $|1/1$

Mate side $21/1$

Put on conveyor $1/1$

Average

Time

$0\mathrm{.}040$

$0\mathrm{.}030$

$0\mathrm{.}055$

$0\mathrm{.}153$

$0\mathrm{.}234$

$0\mathrm{.}183$

$0\mathrm{.}032$

Rating

$(\%)$

$100$

$105$

$110$

$100$

$90$

$90$

$100$

$($a$)$ With an allowance factor of $15\%$ to cover P $($personal$),$ F $($fatigue$),$ and D $($delay$),$

what are the normal minutes per piece, the standard minutes per unit, and the number

of hours per $1000$ pieces?

$($b$)$ If the performance against standard has averaged $120\%,$ what is the incentive hourly

if day work is paid at $$15\mathrm{.}75$ per hour?