Prevost Chemicals manufactures an industrial solvent at its only processing plant. A liquid chemical and labor are the two primary inputs. All other resources are included in manufacturing overhead. The plant never has any work-in-process or finished goods inventories. Information from the previous four periods of production follow: 

Required

a. Compute the partial productivity measures for chemical for the four periods.

b. Compute the partial productivity measures for labor for the four periods.

c. Compute the total factor productivity for the four periods.

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Chemical input (gallons).. Labor input (hours)... Solvent sales (gallons) Average price of chemical per gallon ........ Average wage rate per hour. Average sales price per gallon.. Manufacturing overhead (total).. Period 1 125,000 12,500 110,000 Period 2 Period 3 129,280 128,000 11,200 15,000 113,120 120,000 $ 2.00 $ 2.10 28.00 26.00 10.26 10.00 236,000 245,312 $ 1.95 31.00 9.80 245,400 Period 4 120,000 10,100 103,020 $ 2.25 34.00 10.60 243,090