The cost of making one cup of lemonade = 0.01 + 0.02 + 0.03 + 0.02 + 0.10 = 0.18
Wanda sells a cup of lemonade for 0.50, thus, she always make a gain of 0.32 on each cup of lemonade. That is, Profit = 0.50 - 0.18 = 0.32.
For 300 cups of lemonade, Wanda profit's will be 0.32 * 300 = 96
Therefore, Wanda's economic profit is $96.
The main thing we can do to manage the problem of scarcity is to not overspend.
Scarcity happen when the number of demand in our society heavily outnumber the amount of resources available. By observing our consumption behavior today, we will notice that a lot of people spend money to buy more goods or services that they actually need.
If we control this overspending behavior, not only people who overspend can save some of their money, there will be a lot of goods/services left for other people.
