Please help. Monster Problem!!!!

Problem 13-25 The product development group at Landon Corporation has been working on a new computer software product that has the potential to capture a large market share. Through outside sources, Landon's management learned that a competitor is working to introduce a similar product. As a result, Landon's top management increased its pressure on the product development group. The group's leader turned to PERT/CPM as an aid to scheduling the activities remaining before the new product can be brought to the market. The project network is as follows: Start Finish The activity time estimates (in weeks are as follows: Activity Pessimistic Optimistic 3.0 3.0 5.0 4.0 2.0 Most Probable 4.0 3.5 5.0 3.0 10.0 8.5 6.0 6.0 7.5 4.5 5.0 2.0 4.0 7.0 6.0 4.0 14.0 12.5 7.5 13.0 6.0 6.0 2.5 5.0 6.0 Because Landon Corporation is being pressured to complete the product development project at the earliest possible date, the project leader requested that the possibility of crashing the project be evaluated. a. Formulate a linear programming model that could be used in making the crashing decisions. For subtractive or negative numbers use a minus sign even if there is a + sign before the blank Let Ki = Cost to crash activity i one week Mi= Maximum crash time in weeks for activity i Yi = Number of weeks activity i is crashed Xi = Completion time for activity i Ti = Normal completion time for activity i Min L KAYA KBYB . KcYc KOYD KEYE KFYF KGYG KHYH KIY KjYj h + + + + + + + + + + + *888* ****gx | + + + + + + + + + + + + + XFIN + XFIN + x XFIN ST b. What information would have to be provided before the linear programming model could be implemented? The input in the box below will not be graded, but may be reviewed and considered by your instructor. Problem 13-25 The product development group at Landon Corporation has been working on a new computer software product that has the potential to capture a large market share. Through outside sources, Landon's management learned that a competitor is working to introduce a similar product. As a result, Landon's top management increased its pressure on the product development group. The group's leader turned to PERT/CPM as an aid to scheduling the activities remaining before the new product can be brought to the market. The project network is as follows: Start Finish The activity time estimates (in weeks are as follows: Activity Pessimistic Optimistic 3.0 3.0 5.0 4.0 2.0 Most Probable 4.0 3.5 5.0 3.0 10.0 8.5 6.0 6.0 7.5 4.5 5.0 2.0 4.0 7.0 6.0 4.0 14.0 12.5 7.5 13.0 6.0 6.0 2.5 5.0 6.0 Because Landon Corporation is being pressured to complete the product development project at the earliest possible date, the project leader requested that the possibility of crashing the project be evaluated. a. Formulate a linear programming model that could be used in making the crashing decisions. For subtractive or negative numbers use a minus sign even if there is a + sign before the blank Let Ki = Cost to crash activity i one week Mi= Maximum crash time in weeks for activity i Yi = Number of weeks activity i is crashed Xi = Completion time for activity i Ti = Normal completion time for activity i Min L KAYA KBYB . KcYc KOYD KEYE KFYF KGYG KHYH KIY KjYj h + + + + + + + + + + + *888* ****gx | + + + + + + + + + + + + + XFIN + XFIN + x XFIN ST b. What information would have to be provided before the linear programming model could be implemented? The input in the box below will not be graded, but may be reviewed and considered by your instructor