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In Problems 51 and 52, solve each linear programming problem.

Maximize z=3x+4y when x≥0,y≥0,3x+2y≥6,x+y≤8

Short Answer

Expert verified

By maximizing z=3x+4ywhen x≥0,y≥0,3x+2y≥6,x+y≤8, the maximum value is z=32which occurs at x=0;y=8

Step by step solution

01

Step 1. Given

The problem:

z=3x+4y

The constraints:

x≥0,y≥0,3x+2y≥6,x+y≤8

02

Step 2. Graph the constraints.

The graph of the constraints (the feasible points) is illustrated:

03

Step 3. List the corner points

We list the corner points and evaluate the objective function at each.

S.No.
Corner points (x,y)
Value of the objective function
z=3x+4y
1.
(0,3)
z=3(0)+4(3)=12
2.
(0,8)
z=3(0)+4(8)=32
3.
(2,0)
z=3(2)+4(0)=6
4.
(8,0)
z=3(8)+4(0)=24
04

Step 4. Maximize the objective function.

From the table, the maximum value of the given objective function is 32 and it occurs at (0,8)

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