The opportunity cost of 1 bushel of tomatoes is 5/2 bushels of squash.
Explanation:
If economists lay claim to a source of money's "opportunity cost," they indicate the importance of its next best-rated alternative use.
For example, if you spend millions of dollars in a movie, you can't fully spend all the time reading a novel at home, and neither can you spend all the money on anything else.
When you can not get to a definite conclusion, you can calculate the cost of your opportunity with a very simple equation: divide the losses by whatever you can earn from choosing one position over another.