Chap 6: Problem # 3

3. A manager wants to assign tasks to workstations as efficiently as possible and achieve an hourly output of four units. The department uses a working time of 56 minutes per hour. Assign the tasks shown in the accompanying precedence diagram (times are in minutes) to workstations using the following rules: Page 292 a. In order of most following tasks. Tiebreaker: greatest positional weight. b. In order of greatest positional weight. Tiebreaker: most following tasks. c. What is the efficiency? & 6 - & -6 \\ & & & 2. The owner of Genuine Subs, Inc., hopes to expand the present operation by adding one new outlet. She has studied three locations. Each would have the same labor and materials costs (food, serving containers, napkins, etc.) of $1.76 per sandwich. Sandwiches sell for $8 each in all locations. Rent and equipment costs would be $5,000 per month for location A, $5,500 per month for location B, and $5,800 per month for location C. a. Determine the volume necessary at each location to realize a monthly profit of $10,000. b. If expected sales at A, B, and C are 21,000 per month, 22,000 per month, and 23,000 per month, respectively, which location would yield the greatest profits? Pareiygiie i o . -~ ~ 11. A manager received an analysis of several cities being considered for a new office complex. The data (10 points maximum) are Page 375 as follows: a. If the manager weights the factors equally, how would the locations stack up in terms of their composite factor rating scores? b. If business services and construction costs are given weights that are double the weights of the other factors, how would the locations stack up? Location Score Factor A B C Business services Community services Real estate costs Cost of living Taxes N 01N O 00 O O 0 H 00 01 N N O 9 7 3 Construction costs 5 4 5 6 Transportation 14. A company that handles hazardous waste wants to minimize the shipping cost for shipments to a disposal center from five receiving stations it operates. Given the locations of the receiving stations and the volumes to be shipped daily, determine the location of the disposal center. Location of Processing Volume, Station, (x,y) Tons per Day 10,5 26 4 9 47 25 2,6 30 87 40