in the following sequence 1 300 units at 6 2 400 units at 7
Solution
Calculate average unit cost :
Average unit cost = 6200/900 = $6.89
| Unit | Cost | |
| First purchase | 300 | 1800 |
| Second purchase | 400 | 2800 |
| Third purchase | 200 | 1600 |
| Total | 900 | 6200 |

Calculate average unit cost :
Average unit cost = 6200/900 = $6.89
| Unit | Cost | |
| First purchase | 300 | 1800 |
| Second purchase | 400 | 2800 |
| Third purchase | 200 | 1600 |
| Total | 900 | 6200 |
