Answer: $100
Step-by-step explanation:
Opportunity cost is the benefit that we forgo when another option is chosen thereby leaving out something else. Based on the information given, Ed's opportunity cost of going to the ball will be calculated as the addition of the income that's lost when he takes some time off from his work and the expenses that he incurs on the base ball game. This will be:
= ( 4 × $15) + $25 + $15
= $60 + $40
= $100
The opportunity cost is $100.