Using just excel
show the equation in excel please
Example [3] ▪ An engineering firm has requested that $500,000 be spent now on software and hardware to improve the efficiency of the environmental control systems of a plant ▪ This is expected to save $10,000 per year for 10 years in energy costs and $700,000 at the end of 10 years in equipment refurbishment costs ▪ Find the rate of return