Shana decides to buy a pair of used ripped jeans for $80.00. She was willing to pay $100.00. When her friend Tanya sees the jeans, she loves them and thinks they are worth $165.00. So she offers Shana $130.00 for the jeans, and Shana accepts. Shana and Tanya are both thrilled with the exchange.
The total surplus received by both Shana and Tanya is $
