• • 1.6 George Kyparisis (using data from Problem 1.5)

determines his costs to be as follows:

◆ Labor: $10 per hour

◆ Resin: $5 per pound

◆ Capital expense: 1% per month of investment

◆ Energy: $0.50 per BTU Show the percent change in productivity for 1 month last year versus 1 month this year, on a multifactor basis with dollars as the common denominator.