Question

A sales person Samanth has the following record of sales. He is paid a commission at fixed rate per unit but varying rates for products P, Q and R.

| Months | sale in units | commission in Rs. |
| P | Q | R |
| January | 9 | 10 | 2 | 780 |
| February | 15 | 5 | 4 | 900 |
| March | 6 | 10 | 3 | 820 |

Find the rate of commission payable on P, Q and R per unit sold

Answer 1

Let rates of commission per unit of sales be x,y and z for P, Q and Rrespectively

Writing 9x + 10y + 2z = 780

15x + 5y + 4z = 900

6x + 10y + 3z = 820

Note: Proportionate marks should be given to any other appropriate method.