Data Example E \begin{tabular}{l|r} \hline Cost of equipment needed & $380,000 \\ \hline Working capital needed & $60,000 \\ \hline Overhaul of equipment in four years & $20,000 \\ \hline Salvage value of the equipment in five years & $80,835 \\ \hline Annual revenues and costs: & $410,000 \\ \hline Sales revenues & $245,000 \\ \hline Cost of goods sold & $65,000 \\ \hline Out-of-pocket operating costs & 11% \end{tabular} Enter a formula into each of the cells marked with a ? below Exhibit 12-8 *Use the formulas from Appendix 13B: Present value of $1=1/(1+r)n Present value of an annuity of $1=(1/r)(1(1/(1+r)n)) where n is the number of years and r is the discount rate c. The internal rate of return is between what two whole discount rates (e.g., between 10% and 11%, between 11% and 12%, between 12% and 13%, between 13% and 14%, etc.)