Answer: 5 cups of tea
Explanation:
Opportunity cost is what an individual, firm or government forgoes in order to get something else. For example, an individual might have $2. A pen costs $2 likewise a notebook. If the person decides to buy the pen, the opportunity cost is the notebook which he or she did not buy.
With the money Sarah has, spending her entire budget will give her 40 cups of tea or 8 snacks. This implies that for 1 snack, the opportunity cost is (40/8) = 5 cups of tea
