Question 27267
Some detail seems to be missing. Obviously if he wants to maximize income, he should sell as many $5 tickets as he can. Since he "must sell at least 200 $4" then he's left with 500-200=300 seats. He should sell all 300 for $5, because that would make him more money than if he sold them for $4, right? He'll then make
{{{200*4+300*5-2000=800+1500-2000=300}}} $300 profit. Since there's nothing in the problem that implies he won't be able to sell every ticket he puts up for sale, I have to presume that's the answer or something else is missing from the problem.