Answer: $200 per hour
Explanation: Partial productivity is simply defined as the ratio of output to one particular type of input. Input could be labor, material or capital.
Partial productivity varies depending on the type of input required to calculate the productivity and could hence take the form of labor, material or capital productivity.
Labor productivity = output ÷ labor input
Labor productivity = $84,000 ÷ 420 hours = $200 per hour
Partial measure of productivity for labor hours = $200 per hour