Engineering Economy 7th Edition by Leland Blank ,Anthony Tarquin

Exercise 39

A new annular die process is to be installed for ex­truding pipes, tubes, and tubular films. The phase I installed price for the dies and machinery is $2,000,000. The manufacturer has not decided how to finance the system. The WACC over the last 5 years has averaged 10% per year.
a) Two financing alternatives have been de­fined. The first requires an investment of 40% equity funds at 9% and a loan for the balance at an interest rate of 10% per year. The second alternative requires only 25% eq­uity funds and the balance borrowed at 10.5% per year. Which approach will result in the smaller average cost of capital
b) Yesterday, the corporate finance committee decided that the WACC for all new projects must not exceed the 5-year historical average of 10% per year. With this restriction, what is the maximum loan interest rate that can be in­curred for each of the financing alternatives