Problem 12-06 Algo (Sensitivity Analysis) «Question 2 of 5. Check My Work (2 remaining) eBook Industrial Designs has been awarded a contract to design a label for a new wine produced by Lake View Winery. The company estimates that 150 hours will be required to complete the project. The firm's three graphic designers available for assignment to this project are Lisa, a senior designer and team leader; David, a senior designer; and Sarah, a junior designer. Because Lisa has worked on several projects for Lake View Winery, management specified that Lisa must be assigned at least 40% of the total number of hours assigned to the two senior designers. To provide label designing experience for Sarah, the junior designer must be assigned at least 15% of the total project time. However, the number of hours assigned to Sarah must not exceed 25% of the total number of hours assigned to the two senior designers. Due to other project commitments, Lisa has a maximum of 50 hours available to work on this project. Hourly wage rates are $30 for Lisa, $15 for David, and $18 for Sarah. (a) Formulate a linear program that can be used to determine the number of hours each graphic designer should be assigned to the project to minimize total cost. If an amount is zero, enter "0". If the constant is "1" it must be entered in the box. Let L = number of hours assigned to Lisa D= number of hours assigned to David S amount allocated to Sarah Min 30 15 D 18 .6 -.4 D 0 Os 2 ° Minimum Lisa - 2 0 2 .25 2 0 D 1 S 22.5 Minimum Sarah - - = .25 D Maximum Lisa -1 S ° 1 0 D 0 s = 50 Maximum Sarah • - 1 1 D 1 s 150 Total Time L. D. S 0 (b) How many hours should be assigned to each graphic designer? Hours Assigned Lisa 48 David 72 Sarah 30 What is the total cost? If required, round your answer to a whole dollar amount. $ 3060 (c) Suppose that the maximum hours for Lisa was more than 50 hours. What effect would this have on the optimal solution and optimal objective? Explain. If an amount is zero, enter "0". Change in the optimal objective would be since Lisa -Select your answer- using the full 50 hours right now. Therefore, additional hours for Lisa will - Select your answer- (d) If Sarah were not required to work a minimum number of hours on this project, would the optimal solution change? the solution. No