Selah Company Bought a New Computer-Assisted Design (CAD)software for $10,000,000

Selah Company bought a new computer-assisted design (CAD)software for $10,000,000 at the beginning of Year 1.The software has a useful life of 3 years and will save the company annual cash operating expenses of $4,000,000 in each of those 3 years.The software will have a zero net salvage value at the end of 3 years.It belongs to Class 12 with a capital cost allowance (CCA)rate of 100%.With special permission from the Canada Revenue Agency,the half-year CCA rule has been waived for the company to permit a maximum 100% CCA deduction for Year 1.The company's income tax rate and after-tax cost of capital are 40% and 12%,respectively.
Required:
a)Calculate the maximum total CCA tax shied available to the company.
b)Calculate the present value of the annual cash savings in operating expenses.
c)Calculate the net present value (NPV)of the investment.
d)Was the internal rate of return (IROR)greater than or less than the company's after-tax cost of capital of 12%? (Note: Do NOT try to calculate the implied actual internal rate or return.)
e)By how much must the annual savings in operating expenses be increased or decreased to make the investment just worthwhile,that is,either zero NPV or 12% IROR?