Table 3-22
Assume that Zimbabwe and Portugal can switch between producing toothbrushes and producing hairbrushes at a constant rate. 
-Refer to Table 3-22. Assume that Zimbabwe and Portugal each has 60 machine minutes available. Originally, each country divided its time equally between the production of toothbrushes and hairbrushes. Now, each country spends all its time producing the good in which it has a comparative advantage. As a result, the total output increased by
Definitions:
External Locus
A belief that outcomes of events are determined by external forces or fate, rather than one's own actions.
Learned Helplessness
A condition in which a person suffers from a sense of powerlessness, arising from a traumatic event or persistent failure to succeed.
School Achievement
The measure of academic performance and the attainment of educational objectives set by educational institutions for students.
Belief Preservation
The tendency for people to hold onto their beliefs even when faced with contrary evidence, also known as belief perseverance.
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