A firm cleans chemical tank cars in the St. Louis area. With standard equipment, the firm typically cleaned 70 chemical tank cars per week. They utilized 10 gallons of solvent, and two employees worked 5 days per week, 8 hours a day. The company decided to switch to a larger cleaning machine. With the larger machine, they cleaned 60 tank cars in only 4 days per week. They utilized 13 gallons of solvent, and the two employees worked 6 hours a day. The solvent costs $4.75 per gallon and the worker is paid $18/hr. Which of the following ranges includes the change in total productivity? Calculate your number to the third decimal place.

A firm cleans chemical tank cars in the St. Louis area. With standard equipment, the firm typically cleaned 70 chemical tank cars per week. They utilized 10 gallons of solvent, and two employees worked 5 days per week, 8 hours a day. The company decided to switch to a larger cleaning machine. With the larger machine, they cleaned 60 tank cars in only 4 days per week. They utilized 13 gallons of solvent, and the two employees worked 6 hours a day. The solvent costs $4.75 per gallon and the worker is paid $18/hr. Which of the following ranges includes the change in total productivity? Calculate your number to the third decimal place