Micro #26 1995 & Micro #54 2000 - Perfect Comp (Profit Maximisation)

Profit Maximisation - Perfectly Competitive Firm

Micro -2008 #50 Multiple Choice (Explanation)

Answer - (C) 

Average Total cost (for each unit) is $6
Total cost for 20 units is $120
Average variable cost (for each unit) is $5
Total variable cost for 20 units is $100
Average Fixed costs (for each unit) is $1
Total fixed cost for 20 units is $20