A sales person Ravi has the following record of sales for the month of January, February and March 2009 for three products A, B and C. He has been paid a commission at fixed rate per unit but at varying rates for products A, B and C.
| Months |
Sales in Units |
Commission |
| A |
B |
C |
| January |
9 |
10 |
2 |
800 |
| February |
15 |
5 |
4 |
900 |
| March |
6 |
10 |
3 |
850 |
Find the rate of commission payable on A., B and C per unit sold using matrix inversion method.
