a public good Paolo and Van are considering contributing toward the creation of a public park. Each can choose whether to contribute $300 to the public park or to keep that $300 for a cell phone. Since a public park is a public good, both Paolo and Van will benefit from any contributions made by the other person. Specifically, every dollar that either one of them contributes will bring each of them $0.70 of benefit. For example, if both Paolo and Van choose to contribute, then a total of $600 would be contributed to the public park. So, Paolo and Van would each receive $420 of benefit from the public park, and their combined benefit would be $840. This is shown in the upper left cell of the first table. Since a cell phone is a private good, if Paolo chooses to spend $300 on a cell phone, Paolo would get $300 of benefit from the cell phone and Van wouldn't receive any benefit from Paolo's choice. If Paolo still spends $300 on a cell phone and Van chooses to contribute $300 to the public park, Paolo would still receive the $210 of benefit from Van's generosity. In other words, if Paolo decides to keep the $300 for a cell phone and Van decides to contribute the $300 to the public project, then Paolo would receive a total benefit of $300 + $210 = $510, Van would receive a total benefit of $210, and their combined benefit would be $720. This is shown in the lower left cell of the first table. Complete the following table, which shows the combined benefits