Hokey Min's Kleen Karpet cleaned $75$ rugs in October, consuming the following resources:

Labor:

Solvent:

$550$ hours at $$13$ per hour

Machine Rental:

$100$ gallons at $$5$ per gallon

$22$ days at $$50$ per day

a$)$ Labor productivity per dollar $=0\mathrm{.}0105$ rugs$/$dollar $($round your response to four decimal places$).$

b$)$ Multifactor productivity $=\}$rugs$/$dollar $($round your response to four decimal places$).$