Since the amount of raw material required to manufacture
each unit of the three products is fixed, we can either ask for an increase in the
available raw material or we may ask the clients to reduce their orders Remark If we replace A in Example 3 by A1 given by
A1 = 9
12
6
10
20
0






i e , if the clients agree to reduce their purchase orders, then
A1 B = 
3
4
0
9
12
6
7
9
3
10
20
0
5
12
7



 


 


 



  = 



141
216
78
170
220
60
Rationalised 2023-24
MATHEMATICAL MODELLING        201
This requires 311 units of R1, 436 units of R2 and 138 units of R3 which are well
below the available raw materials, i