Kane Manufacturing has a division that produces two models of fireplace grates, x units of model A and y units of model B. To produce each model A grate requires 3 lb of cast iron and 6 min of labor. To produce each model B grate requires 4 lb of cast iron and 3 min of labor. The profit for each model A grate is $2, and the profit for each model B grate is $1.50. 1000 lb of cast iron and 20 labor- hours are available for the production of grates each day. Because of an excess inventory of model B grates, management has decided to limit the production of model B grates to no more than 200 grates per day. (a) If the contribution to the profit of a model A grate is changed to $1.25/grate, what will be the optimal profit? The optimal profit is P = $0 xat (x, y) = 20,3 × ). (b) If the contribution to the profit of a model A grate is changed to $2.25/grate, what will be the optimal profit? The optimal profit is P = $ 20 xat (x, y) = 6,0 × ). *

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Kane Manufacturing has a division that produces two models of fireplace grates, x units of model A and y units of model B. To produce each model A grate requires 3 lb of cast iron and 6 min of labor.
To produce each model B grate requires 4 lb of cast iron and 3 min of labor. The profit for each model A grate is $2, and the profit for each model B grate is $1.50. 1000 lb of cast iron and 20 labor-
hours are available for the production of grates each day. Because of an excess inventory of model B grates, management has decided to limit the production of model B grates to no more than 200
grates per day.
(a) If the contribution to the profit of a model A grate is changed to $1.25/grate, what will be the optimal profit?
x at (x, y) = (20,3
× ).
The optimal profit is P = $0
(b) If the contribution to the profit of a model A grate is changed to $2.25/grate, what will be the optimal profit?
The optimal profit is P = $ 20
x at (x, y) =
× ).
6,0
Transcribed Image Text:Kane Manufacturing has a division that produces two models of fireplace grates, x units of model A and y units of model B. To produce each model A grate requires 3 lb of cast iron and 6 min of labor. To produce each model B grate requires 4 lb of cast iron and 3 min of labor. The profit for each model A grate is $2, and the profit for each model B grate is $1.50. 1000 lb of cast iron and 20 labor- hours are available for the production of grates each day. Because of an excess inventory of model B grates, management has decided to limit the production of model B grates to no more than 200 grates per day. (a) If the contribution to the profit of a model A grate is changed to $1.25/grate, what will be the optimal profit? x at (x, y) = (20,3 × ). The optimal profit is P = $0 (b) If the contribution to the profit of a model A grate is changed to $2.25/grate, what will be the optimal profit? The optimal profit is P = $ 20 x at (x, y) = × ). 6,0
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