Jammer Company uses a weighted average perpetual inventory system and reports the following:
| August 2 | Purchase | 15 units at $14.00 per unit. |
|---|---|---|
| August 18 | Purchase | 17 units at $11.00 per unit. |
| August 29 | Sale | 30 units. |
| August 31 | Purchase | 20 units at $17.00 per unit. |
What is the per-unit value of ending inventory on August 31?