ZipCar auto parts store has $92,000 to invest in a project to detect and reduce insier theft in their stores. They have considering investing in one of two alternatives, identified as Y and Z. Z is the higher first-cost alternative, and the incremental initial investment between the two is $34,000 and will exhibit a rate of return of 20% per year. Z requires an investment of $92,000. They expect a rate of return on the S92000 investment of 34 percent. Answer the following questions: (a) what is the size of the investment required in Y?, and, (b) what is the rate of return on Y?

You are the manager of a large crude-oil refinery. as part of the refining process, a certain heat exchanger (operated at high temperatures and with abrasive material flowing through it) must be replaced every year. the replacement and downtime cost in the first year is $165 comma 000. this cost is expected to increase due to inflation at a rate of 7% per year for six years (i.e. until the eoy 7), at which time this particular heat exchanger will no longer be needed. if the company's cost of capital is 15% per year, how much could you afford to spend for a higher quality heat exchanger so that these annual replacement and downtime costs could be eliminated?