Hand written solution and an explanation is required, do NOT use Excel functions to solve.

An engineer must recommend one of two rapid prototyping machines for integration into an upgraded manufacturing line. She obtained estimates from salespeople from two companies. Salesman A gave her the estimates in constant value (today's) dollars, while saleswoman B provided the estimates in future (then current) dollars. The company's MARR is equal to the real rate of return of 20% per year, and inflation is estimated at 4% per year. Use PW analysis to determine which machine the engineer should recommend. A (in CV Dollars) B (in Future Dollars) First cost, $ -140,000 -155,000 AOC, $ per year 25,000 40,000 Life, years 10 10