I need help with these homework questions

Please show all formula calculations.

1.We have two independent and mutually exclusive projects, A and B. Project A requires an initial investment of $1500, and will yield $800 of cash inflows for the next three years. Project B requires an initial investment of $5000, and will yield $1,500 of cash inflows for the next five years. The required return on each project is 10%.

The cash flows and required return given are all in nominal terms. Given that the inflation rate is 3%, answer the following question:

What is the real rate of return based on the exact Fisher equation?

2.Holmes Inc. purchased computer equipment two years ago at a total cost of 1,000,000.These computers could be sold today for $300,000. If these computers are sold in five years, they will be worth $50,000. The CCA rate for these computers is 30%.

The company is now considering whether it should replace these computers with newer and more powerful ones. The estimated total purchase cost of the new computers is $1.5 million. These computers can be sold for $300,000 in five years, and their CCA rate remains at 30%. The company expects to obtain before-tax cost savings of $300,000 per year from these new computers.

The company's marginal tax rate is 35%, and its required rate of return on new equipment is 15%. Should the company replace the computer equipment?