Number of Workers Output Fixed Cost Variable Cost Total Cost 0 0 $50 $0 $50 1 90 $50 $20 $70 2 170 $50 $40 $90 3 230 $50 $60 $110 4 240 $50 $80 $130 Refer to Table 13-3. The average total cost at an output level of 170 is Group of answer choices $0.53. $90. $1.9. $45