Final answer:
The contributions to GDP for each transaction are: $300, $0, $0, $0, and $10,000.
Step-by-step explanation:
The transactions can be categorized based on whether they contribute to GDP or not:
- Edna buying the old bookcase and fixing it up does not contribute to GDP, as it is a second-hand transaction. So, the contribution to GDP is 0.
- When Edna sells the fixed-up bookcase in her antique shop, it contributes to GDP. The contribution to GDP is $500 - $200 = $300.
- Mark paying $500 for avocados for his restaurant does not directly contribute to GDP, as it is an intermediate transaction. So, the contribution to GDP is 0.
- Mary paying $40 for fish for her family dinner does not contribute to GDP, as it is a personal consumption transaction. So, the contribution to GDP is 0.
- General Motors producing 10 trucks at a cost of $15,000 each contributes to GDP. The total production value is 10 trucks x $15,000 = $150,000. However, only 8 trucks are sold to consumers for $20,000 each, so the contribution to GDP is $20,000 x 8 - $150,000 = $10,000.
- Bob receiving his social security check does not contribute to GDP, as it is a transfer payment. So, the contribution to GDP is 0.