At issue in a particular city vote is how much to spend, per person, on city parks next year. Among the 10,000 voters, 1000 prefer to spend $30 per person, but no more; 3500 prefer to spend $45 per person, but no more; 2,500 prefer to spend $80 per person, but no more; and 3000 prefer to spend $150 per person, but no more.