Question

In: Advanced Math

Solve the following optimization problem (Be sure to include the statement of the optimization problem and...

Solve the following optimization problem (Be sure to include the statement of the optimization problem and a graph of the feasible in your solution):

Jamie has joined a building contest. A dog shape requires 3 small blocks and one large block to build. A robot shape requires 5 small bricks and 5 large bricks to build. Jamie has a supply of 240 small bricks and 100 large bricks.

If a dog is worth 2 points and a robot is worth 7 points, how many shapes of each type should Jamie build to maximize the points?

Solutions

Expert Solution

from the given data make table

small blocks small blocks points
x1 = number of dog 3 1 2
x2 = number of robot 5 5 7
available 240 100

.

system is

subject to

After introducing slack variables

subject to


Iteration-1 Cj 2 7 0 0
B CB XB x1 x2 S1 S2 MinRatio
XB/x2
S1 0 240 3 5 1 0 240/5=48
S2 0 100 1 (5) 0 1 100/5=20
Z=0 Zj 0 0 0 0
Zj-Cj -2 -7↑ 0 0



Negative minimum Zj-Cj is -7 and its column index is 2.

Minimum ratio is 20 and its row index is 2.

The pivot element is 5.

Entering =x2, Departing =S2


Iteration-2 Cj 2 7 0 0
B CB XB x1 x2 S1 S2 MinRatio
XB/x1
S1 0 140 (2) 0 1 -1 140/2=70
x2 7 20 0.2 1 0 0.2 20/0.2=100
Z=140 Zj 1.4 7 0 1.4
Zj-Cj -0.6↑ 0 0 1.4



Negative minimum Zj-Cj is -0.6 and its column index is 1.

Minimum ratio is 70 and its row index is 1

The pivot element is 2.

Entering =x1, Departing =S1

Iteration-3 Cj 2 7 0 0
B CB XB x1 x2 S1 S2 MinRatio
x1 2 70 1 0 0.5 -0.5
x2 7 6 0 1 -0.1 0.3
Z=182 Zj 2 7 0.3 1.1
Zj-Cj 0 0 0.3 1.1



Since all

Hence, the optimal solution has arrived

70 dog shape

6 robot  shape

maximum point is 182


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