Corporate Finance Ross Westerfield Jaffe 6th Edition Solutions -

If you’re a student, treat the manual as a coach , not a cheat sheet . Use it after you have attempted the problem yourself, and never submit a solution that’s a verbatim copy of the manual. 4. Common Problem Types & How the Manual Helps Below are a few archetypal problems you’ll encounter throughout the book, paired with the specific guidance you can expect from the manual.

| Step | What to Do | Why It Works | |------|------------|--------------| | | Solve the question on your own (paper + Excel). | Struggles are learning moments. | | 2. Compare the Answer Key | Look at the final numeric answer only. Does yours match? | Quick sanity check; if not, you know something is off. | | 3. Study the Outline | Read the bullet‑point solution (no full derivations). Identify the key decision points —e.g., “use NPV, not IRR, because of multiple sign changes”. | You see the strategic path without being spoon‑fed every calculation. | | 4. Dive into the Full Walkthrough | Only after you’ve identified where you went wrong, read the detailed steps. Replicate each sub‑step in your notebook/Excel. | Reinforces each algebraic move; you learn the mechanics. | | 5. Re‑do the Problem Without Looking | Close the manual, redo the problem from scratch. | Tests whether you truly internalized the method. | | 6. Extend the Problem | Change an assumption (e.g., tax rate, project horizon) and redo the analysis. | Shows you can apply the framework flexibly. | | 7. Document Your Process | Write a brief “solution journal” entry: problem statement, your approach, where you deviated, what you learned. | Creates a personal knowledge base for future exams. | If you’re a student, treat the manual as

The (often labeled “Instructor’s Manual”) serves three core purposes: Common Problem Types & How the Manual Helps

| Problem Type | Typical Question | Manual Guidance | |--------------|------------------|-----------------| | | “Project X requires an initial outlay of $2 M and yields cash flows of $500 k for 6 years. The firm’s WACC is 10 %. Compute NPV and IRR; recommend acceptance.” | Solution Outline states: “Compute NPV using the WACC; compute IRR using trial‑and‑error or Excel IRR . Compare IRR to WACC. Explain why NPV is the decisive metric when cash‑flow signs change.” The full solution shows the Excel NPV formula, a table of discounted cash flows, and a graph of the NPV profile. | | CAPM Beta Estimation | “Using the historical monthly returns of XYZ Corp. and the market index, estimate beta via regression.” | The manual walks you through: (a) assembling data in Excel, (b) running the LINEST function, (c) interpreting the slope as beta, (d) checking the R‑squared for model fit. It also discusses pitfalls (thin trading, outlier removal). | | WACC Calculation with Preferred Stock | “Company A has $30 M in debt at 5 % yield, $50 M in equity with a cost of 12 %, and $20 M in preferred stock paying 8 % dividend. The corporate tax rate is 35 %. Compute WACC.” | The manual provides a clear weight calculation: each component’s market value divided by total value, then applies the tax shield only to debt. A concise table shows the intermediate steps. | | Dividend Policy – Gordon Growth | “If the expected dividend next year is $2.00, the growth rate is 5 % and the required return is 10 %, what is the stock price?” | A one‑line solution using the Gordon formula, plus a sensitivity table that varies the growth rate and required return, illustrating how price reacts. | | M&A Accretion/Dilution | “A firm with EPS $3.00 and 1 M shares acquires a target with EPS $2.00 and 500 k shares for $15 M cash. The acquirer’s tax rate is 30 %. Compute post‑deal EPS and determine if the deal is accretive.” | The manual breaks down (i) the purchase price financing mix, (ii) the net income impact after tax, (iii) the new share count, and (iv) the EPS comparison. A decision matrix summarises “Accretive if post‑deal EPS > $3.00”. | | Real Options – Decision Tree | “A project can be expanded after Year 2 at a cost of $5 M, generating additional cash flows of $3 M per year for 4 years. Should the firm invest in the option?” | Full decision‑tree diagram, probability‑weighted cash‑flow branches, and a discount‑back calculation using risk‑adjusted rates. The manual explains the “option value” vs. the traditional NPV. | probability‑weighted cash‑flow branches