Comparison of Monopolistically Competitive Equilibrium and Perfectly Competitive Equilibrium Perfect Competition Monopolistic Competition $/Q $/Q Deadweight MC AC loss MC AC P DE MR D LR MRL Q Quantity QuantityDeadweight MC AC loss Comparison of Monopolistically Competitive Equilibrium and Perfectly Competitive Equilibrium $/Q Quantity $/Q D = MR QC PC MC AC DLR MRLR QMC P Quantity Perfect Competition Monopolistic Competition