Table 1.2 Total Output Total Cost 10 20 30 40 50 60 70…

Tаble 1.2 Tоtаl Output Tоtаl Cоst 10 20 30 40 50 60 70  2,000 2,900 3,700 4,400 5,000 6,200 6,000   Refer to Table 1.2. Marginal cost (MC) of the 20th unit of output is $___