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1. R. C. Barker makes purchasing decisions for his company. One product that he buys costs $50 per unit when the order quantity is less than 500. When the quantity ordered is 500 or more, the price per unit drops to $48. The ordering cost is $30 per order and the annual demand is 7,500 units. The holding cost is 10 percent of the purchase cost. If R. C. wishes to minimize his total annual inventory costs, he must evaluate the total cost for two possible ordering scenarios. What is the optimal order quantity for each scenario? (Round answer to nearest unit.)
200 and 306  
306 and 500  
300 and 306  
300 and 500  
None of the above  
2.  Consider the following linear programming problem:
Maximize 5x + 6y Save your time  order a paper!Get your paper written from scratch within the tight deadline. Our service is a reliable solution to all your troubles. Place an order on any task and we will take care of it. You won’t have to worry about the quality and deadlines Order Paper NowSubject to 4x + 2y ≤ 420 1x + 2y ≤ 120 all variables ≥ 0 Which of the following points (X,Y) is not a feasible corner point?

7. A tire dealership has sold an average of 1,000 radial tires each year. In the past two years, tire sales were as follows:
Season  Year 1 Demand  Year 2 Demand 
Fall  200  250 
Winter  350  300 
Spring  150  165 
Summer  300  285 
Calculate the seasonal index for each quarter.
Fall = 0.85, Winter = 1.25, Spring = 0.58, Summer = 1.12  
Fall = 0.99, Winter = 1.19, Spring = 0.59, Summer = 1.17  
Fall = 0.95, Winter = 1.35, Spring = 0.68, Summer = 1.22  
Fall = 0.80, Winter = 1.20, Spring = 0.53, Summer = 1.07 
8. Consider the following linear programming problem:
Maximize 5x + 6y
Subject to 4x + 2y ≤ 420
1x + 2y ≤ 120
All variables ≥ 0
Which of the following points (X,Y) is in the feasible region?
(30, 60)  
(105, 5)  
(0, 210)  
(100, 10)  
None of the above 
9. The following data reflects the number of cars sold at a local dealership over a tenmonth period. Calculate the MAPE for months 4 through 10 using a three month moving average forecast.
Time Period  Number of Cars Sold  
1  87  
2  75  
3  83  
4  68  
5  85  
6  79  
7  78  
8  69  
9  74  
10  81  
10.06%  
8.14%  
8.64%  
9.51% 
10. The annual demand for a product has been projected at 2,000 units. This demand is assumed to be normally distributed with a standard deviation of 2 units. The ordering cost is $20 per order, and the holding cost is 20 percent of the purchase cost. The purchase cost is $40 per unit. There are 250 working days per year. Whenever an order is placed, it is known that the entire order will arrive on a truck in 6 days (i.e., a constant leadtime). Currently, the company is ordering 500 units each time an order is placed. What level of service would require a reorder point of 60 units?
37.21  
47.99  
78.61  
84.13  
92.45 
11. Judith Thompson is the manager of the student center cafeteria. She is introducing pizza as a menu item. The pizza is ordered frozen from a local pizza establishment and baked at the cafeteria. Judith anticipates a weekly demand of 10 pizzas. The cafeteria is open 45 weeks a year, 5 days a week. The ordering cost is $15 and the holding cost is $0.40 per pizza per year. What is the optimal number of pizzas Judith should order (round to the nearest whole number)?
92  
184  
211  
174  
300 
12. The number of emergency calls received by the local 911 call center is as follows. Using trend projection to forecast the number of calls that will be received during week 11.
Week  Actual Value  
1  50  
2  35  
3  25  
4  40  
5  45  
6  35  
7  20  
8  30  
9  35  
10  20  
22.54  
24.16  
22.00  
23.00 
13. Two models of a product Regular (X) and Deluxe (Y) are produced by a company. A linear programming model is used to determine the production schedule. The formulation is as follows:
Maximize profit 50x + 60y
Subject to 8x + 10y ≤ 800 (labor hours)
x + y ≤ 120 (total units demanded)
4x + 10y ≤ 500 (raw materials)
x,y ≥ 0
The optimal solution is X=100, Y=0. Which of these constraints is redundant?
First constraint  
Second constraint  
Third constraint  
All of the above  
None of the above 
14. Consider the following linear programming problem:
Maximize 4x + 10y
Subject to 3x + 4y ≤ 480
4x + 2y ≤ 360
all variables ≥ 0
The feasible corner points are (48,84), (0,120), (0,0), (90,0). What is the maximum possible value for the objective function?