# Independent answer check

Batch costs are A: 2×$8=$16, B: 8×$12=$96, C: 5×$10=$50. Total cost is $162 and units total 15. Weighted average price = $162/15 = $10.80 per unit. The unweighted AVERAGE of 8, 12, 10 is $10 and does not describe all 15 units equally.

Independent arithmetic: (2*8 + 8*12 + 5*10)/(2+8+5) = (16+96+50)/15 = 162/15 = 10.8.