Med-Tech labs is a facility that provides medical tests and evaluations for patients, ranging from analyzing blood samples to performing magnetic resonance imaging (MRI). Average price to patients is $85 per patient. Labor costs average $18 per patient, materials costs are $22 per patient, and overhead costs are averaged at $20 per patient.

a) What is the multifactor productivity ratio for Med-Tech? What does your finding mean?

b) If the average lab worker spends four hours for each patient, what is the labor productivity ratio?