Stewart is concerned that the projected annual sales growth rate of $15\%$ for incremental

blended material may be optimistic. Recalculate the Cash Payback Period, Discounted Cash

Payback Period, NPV$,$ IRR and MIRR for each alternative assuming the annual sales growth

rates of $10\%$ and $5\%.$ Assume a WACC of $15\%.$ Does the change in growth rate alter the

recommendation made in question $5?$ Solution requires preparation of spreadsheets.