Hokey Min's Kleen Karpet cleaned 75 rugs in October, consuming the following resources: Labor: Solvent Machine Rental: 520 hours at $15 per hour 100 gallons at $5 per gallon 22 days at $75 per day

a) Labor productivity per dollar= 0.0096 rugs/dollar (round your response to four decimal places).
b) Multifactor productivity_______-