(Oscar's Office Building) Oscar is considering getting into the real estate business. He's looking at buying an existing office building for $1.8 million in cash. He wants to estimate what his return on invested capital (ROIC) will be on an annual basis. The building has 14,000 square feet of rent-able space. He'd like to set the rent at $4.00 per square foot per month. However, he knows that demand depends on price. He estimates that the percentage of the building he can fill roughly follows the equation: % Occupied = 2 - 0.3*Rent (rent is in dollars per square foot per month) So, at $4.00, Oscar thinks he can fill about 80% of the office space. Oscar considers two categories of costs: variable costs, which are a function of the square feet occupied, and fixed costs. Fixed costs will be $8,000 per month and include such items as insurance, maintenance, and security. Variable costs cover such things as electricity and heat and run $1.25 per month for each square foot occupied. a. What is the ROIC? b. What would be the new ROIC if Oscar decides to charge rent of $5.00 per square foot per month?