6. 12.19 An engineer with Accenture was asked by her client to help him understand the difference between DDB and 150% DB depreciation. Answer his questions if B = $180,000, n = 12 years, and S = $30,000. 1. What are the book values after 12 years for both methods? 2. How do the estimated salvage and the two implied book values after 12 years compare in value? 3. Which of the two methods, when calculated correctly considering S = $30,000, write off more of the first cost over the 12 years?