27. Correct answer a. Batch 1 = 800 ÷ 4 units = 200 per unit
Batch 2 = (800 x .9) ÷ 4 units = 180 per unit
Batch 4 = (1,440 x .9) ÷ 8 units = 162 per unit
Hours for next 12 units = (16 x 162) - 800 for first 4 units
= 2,592 - 800
= 1,792 hours
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