You want to go the Six Flags amusement park. The ticket price to enter and enjoy the rides in Six Flags is $65. You live in Richardson and you need to take an Uber to go there which will cost you $40. Approximately, you will spend 6 hours in the park. Instead of going to the park, you could have driven as an Uber driver and for 4 hours (out of the 6) and earned $12 per hour. If you decided not to drive the Uber, you could have also played an online competition during this time and earned $25.

Required:
a. What is the Opportunity Cost of going to Six Flags?
b. What is the total cost of choosing to go the Six Flags?