C.9. A new type of insulated window has just come on the market and your client asks you to determine whether it is worth the extra cost. He wants to use it in a new office building and develops the...

please solve with formulas not excell

Extracted text: C.9. A new type of insulated window has just come on the market and your client asks you to determine whether it is worth the extra cost. He wants to use it in a new office building and develops the following cost information: extra cost of insulated window $50,000 expected life of installation = 40 yr savings in energy costs the first year = $6,000 at EOY 1 %3D expected increase in energy costs (and savings over the 40-yr life of the installation) = 5% Mortgage money is available to finance the extra cost of the insulated window installation at 14 percent. (a) Find the present worth of the cost. (Ans. $50,000) (b) Find the present worth of the savings. (Ans. $64,190) (c) Are the windows a recommended purchase?