The following table shows how the total social benefits and social cost of summer outdoor concerts in Central City vary with the number of performances.
The following table shows how the total social benefits and social cost of summer outdoor concerts in Central City vary with the number of performances.
下列图表显示都市的夏日户外音乐会随著演奏场次期总社会利益和总社会成本的不同。哪个是最有效的音乐会场次？