The warehouse manager at Johnson Cor. is considering installing additional insulation in the warehouse. He estimates that the annual savings would be a reduction in heating cost from the current $16,000 per year to approximately $12,000 per year. Johnson Corp. Desires to earn 12% ROI, and the cost of installing the insulation is expected to be $20,000. How many years does the warehouse have to run in order to justify the insulation project?

		a. 5.55 years
		b. 5.77 years
		c. 5.99 years
		d. 6.19 years