. 1.7 Eric Johnson (using data from Problem 1.6) determines his costs to be as follows: Labor: $10 per hour Resin: $5 per pound Capital expense: 1% per month of investment Energy: $.50 per BTU. Show the percent change in productivity for one month last year versus one month this year, on a multifactor basis with dollars as the common denominator. PX 1.6 Eric Johnson makes billiard balls in his New England plant. With recent increases in his costs, he has a newfound interest in efficiency. Eric is interested in determining the productivity of his organization. He would like to know if his organization is maintain- ing the manufacturing average of 3% increase in productivity. He has the following data representing a month from last year and an equivalent month this year: Last Year Now Units produced Labor (hours) Resin (pounds) Capital invested ($) Energy (BTU) 1,000 300 50 10,000 3,000 1,000 275 45 11,000 2,850 Show the productivity percentage change for each category and then determine the improvement for labor-hours, the typical stan- dard for comparison. PX