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There are forty consumers in an economy who purchase a drug to relieve the pain of arthritis

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There are forty consumers in an economy who purchase a drug to relieve the pain of arthritis. They think that the only effective drug is Namebrand. However, the same drug can be bought by its chemical name acethistestamine, or ace for short. The drug costs $2 to produce no matter what it is called; any quantity demanded can be supplied at that price. The company producing Namebrand exploits consumer ignorance by charging $6 for each unit; that is, the consumers buy Namebrand at $6 per unit, not realizing that ace is a perfect substitute available for only $2. The aggregate demand curve of the 40 uninformed consumers is Q = 400 - 40P. a What would be the value to consumers of knowing that ace and Namebrand are iden- tical? (Answer: $960.) b How much is the deadweight loss due to the consumers' lack of perfect information? (Answer: $320.)