Answer to Question #185199 in Operations Research for Vaishu

Question #185199

A firm makes two products A and B has a total production capacity of 9 tonnes per day , with A and B utilising the same production facilities . The firm has a permanent contract to supply at least 2 tonnes of A per day to another company. Each tonne of A requires 20 machine hours of production time and each tonne of B required 50 machine hours of production time . The daily maximum possible number of machine hours is 360 . All the firm's output can be sold and the profit made is Rs. 80 per tonne of A and Rs. 120 per tonne of B . Formulate the problem of maximizing the profit as an LPP and solve it graphically


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Expert's answer
2021-05-07T10:08:35-0400

Let the product A be x and product B be y. Therefore we have :

x+y9x+y \le 9

x2,y3x \ge2, y \ge 3

Each tonne of A requires 20 machines hours of production time and each tonne of B requires 50 machine hours of production time. The daily maximum possible number of machine hours is 360, thus

20x+50y36020x+ 50y \le 360

All the firm's output can be sold and the profit made is 80$ per tonne of A and 120$ per tonne of B. Thus,

Max Z=80x+120yZ = 80x+120y

x+y9x+y \le 9

20x+50y36020x+ 50y \le 360

x2,y3x \ge2, y \ge 3

Solving for x and y we get x=3x=3 and y=6y =6

Thus, Z=80(3)+120(6)=960Z = 80(3) + 120(6) = 960

Graphically it can be solved as :


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