10-A company is managing a number of different projects as shown below. Labor hours, Revenue per project and Fixed Costs

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10-A company is managing a number of different projects as shown
below. Labor hours, Revenue per project and Fixed Costs are shown
in the table below. The management target is to maximize the profit
by selecting the best combo of projects. However, there is one
limitation which is not to exceed the labor hours in each shift.
What is the total maximum profit?
Project
Labor hours in first shift
Labor hours in second shift
Revenue
Fixed Cost
A
5
11
12000
5000
B
20
8
14000
2000
C
17
4
15000
4000
D
17
18
5000
400
E
17
16
20000
13000
Labor hours limit
40
20
21000
18000
23000
19000
17000