The following table gives the demand and supply of a commodity.
Supply xi | 400 | 200 | 700 | 100 | 500 | 300 | 600 |
Demand yi | 50 | 60 | 20 | 70 | 40 | 30 | 10 |
The following table gives the demand and supply of a commodity.
Supply xi | 400 | 200 | 700 | 100 | 500 | 300 | 600 |
Demand yi | 50 | 60 | 20 | 70 | 40 | 30 | 10 |