<u>Explanation:</u>
a. <em>Remember</em>, the PPF (Production Possibility Frontier) framework allows for the selection of a preferred choice as regards budget spending. Hence, in such a situation, it calls for a choice to be made.
b. According to the PPF framework, where there is an increase in the population, it is expected that such change would result in an increase in the labor force capacity; and ultimately leading to an upward shift in the PPF curve. Thereby, increasing the overall production of the economy.
c. Within the PPF framework, a technological change that makes resources less specialized will result also result in an upward shift in the PPF curve.
Answer:
Direct material= $5,600
Explanation:
<u>First, we need to calculate the direct labor added to Work in Process:</u>
Direct labor= allocated overhead / predetermined overhead rate
Direct labor= 6,400 / 0.8
Direct labor= $8,000
<u>Now, by difference, the direct materials:</u>
Direct material= Ending balance - allocated overhead - direct labor
Direct material= 20,000 - 6,400 - 8,000
Direct material= $5,600