A firm manufactures two types of products, A and B, and sells them at a profit of \approx 2 on type A and B. Each product is processed on two machines, M_{1} and M_{2}. Type A requires one minute of processing time on M_{1} and two minutes on M_{2} . Type B requires one minute on M_{1} and one minute on M_{2} is available for not more than 6 hours 40 minutes while M_{2} is available for at most 10 hours a day. Find how many products of each type the firm should produce each day in order to get maximum profit.
A firm manufactures two types of products, A and B, and sells them at a profit of \approx 2 on type A and B. Each product is processed on two machines, M_{1} and M_{2}. Type A requires one minute of processing time on M_{1} and two minutes on M_{2} . Type B requires one minute on M_{1} and one minute on M_{2} is available for not more than 6 hours 40 minutes while M_{2} is available for at most 10 hours a day. Find how many products of each type the firm should produce each day in order to get maximum profit.

Let the firm manufacture x number of Aand y number of B products.
\therefore According to the question,
X+y \leq 400,2 x+y \leq 600, x \geq 0, y \geq 0
Maximize Z=2 x+2 y
The feasible region determined by \mathrm{X}+\mathrm{y} \leq 400,2 x+y \leq 600, x \geq 0, y \geq 0 is given by

The corner points of feasible region are A(0,0), B(0,400), C(200,200), D(300,0) . The value of Z at corner point is

The maximum value of Z is 800 and occurs at two points. Hence the line B C is a feasible solution. The firm should produce 200 number of Aproducts and 200 number of B products.