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 requires 3 lb of cast iron and 8 min of labor. To produce each model B grate requires 5 lb of cast iron and 5 min of labor. The profit for each model A grate is $2.00, and the profit for each model B grate is $1.50. 1200 lb of cast iron and 1500 min of labor are available for the production of grates per day. Because of a backlog of orders on model A grates, the manager of Kane Manufacturing has decided to produce at least 150 of these grates a day. Operating under this additional constraint, how many grates of each model should Kane produce to maximize profit P in dollars

Respuesta :

Answer:

The company will produce the requested 150 units of A for a gain of 300 dollars

and then use his resourses to produce B yielding a gain of 90 dollars

total of 390 profit

Explanation:

The company will produce at least 150 units of product A therefore:

lbs used: 150 x 3 = 450

minutes of labor used 150 x 8 = 1,200

leaving available:

1,200 - 450 = 750 lbs

1,500 - 1,200 = 300 mins

As time is the most scarce resource we allocate base on thecontribution per minute:

product A $2 of profit for 8 minutes: 0.25 dollars per minute

product B $1.5 of profit for 5 minutes: 0.30 dollars per minute

As product B is more profitable considering labor time we use the entire amount left to produce product B

300 min / 5 minutes = 60 units of b

Kane should produce 60 of model A and 204 of model B to maximize profit

How to maximize the profit?

Represent model A with x and model B with y.

So, we have the following parameters

                   x                y             Available

Pounds     3                 5               1200

Labor        8                 5               1500

Profit      $2.00         $1.50

From the above table, we have the objective function to be:

Max P = 2x + 1.5y

Subject to

3x + 5y ≤ 1200

8x + 5y ≤ 1500

x, y ≥ 0

By plotting the constraints (see attachment), we have the following feasible points

(x,y) = (0,300) (60,204) and (400,0)

Substitute these values in the objective function

P(0,300) = 2*0 + 1.5 * 300 = 450

P(60,204) = 2*300 + 1.5 * 204 = 906

P(400,0) = 2*400 + 1.5 * 0 = 800

The maximum profit is at (60,204)

Hence, Kane should produce 60 of model A and 204 of model B to maximize profit

Read more about objective functions at:

https://brainly.com/question/16826001