You plan to go skiing next weekend. If you do, you’ll have to miss your usual weekend job that pays $100. You won’t be able to study for 8 hours and you won’t be able to use your prepaid college meal plan. The cost of your travel and accommodations will be $350, the cost of renting skis is $60, and your food will cost $40. What is the opportunity cost of the weekend ski trip?
Lost income from the job, lost study time and meals plus money that cannot be spent on other items. Those are the ones I see immdiately, there could be others.