Suppose x1, x2, and x3 are binary variables that are equal to 1 if the corresponding project (1, 2, or 3) is selected and 0 if the corresponding project is not selected. Also, suppose that y1, y2, and y3 are variables that indicate the amount of money invested in the projects (projects can only be invested in if they are selected). The maximum investment is $2000 for project 1, $4000 for project 2, and $6000 for project 3. Which of the following constraints is needed for this problem?     x3 ≤ 6000y3     6000x3 ≤ y3     6000y3 ≤ x3     y3 ≤ 6000x3

Essentials Of Investments
11th Edition
ISBN:9781260013924
Author:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.
Publisher:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.
Chapter1: Investments: Background And Issues
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Suppose x1, x2, and x3 are binary variables that are equal to 1 if the corresponding project (1, 2, or 3) is selected and 0 if the corresponding project is not selected. Also, suppose that y1, y2, and y3 are variables that indicate the amount of money invested in the projects (projects can only be invested in if they are selected). The maximum investment is $2000 for project 1, $4000 for project 2, and $6000 for project 3. Which of the following constraints is needed for this problem?

   

x3 ≤ 6000y3

   

6000x3 ≤ y3

   

6000y3 ≤ x3

   

y3 ≤ 6000x3

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