Figure 4-2[table]
Consumer 1 | Consumer 2
|
[/table]Refer to Figure 4-2.If these are the only two consumers in the market, then the market quantity demanded at a price of $15 is

Question

Figure 4-2​[table]
Consumer 1 | Consumer 2
|
[/table]​Refer to Figure 4-2.If these are the only two consumers in the market, then the market quantity demanded at a price of $15 is

BlackTom AI · Accepted Answer

Re-state the problem and what is being asked:
- The question asks for the market quantity demanded at a price of $15, given there are only two consumers in the market (Consumer 1 and Consumer 2) and we should base the calculation on Figure 4-2.
- The provided data includes two individual demand diagrams (one for each consumer) and a single multiple-choice answer that indicates “b. 0 units.”, but the explicit list of answer choices is missing in the provided data payload.

Analysis of what is required to determine quantity demanded at P = $15:
- For each consumer, determine the quantity demanded from their individual demand curve at the price of $15. This requires reading off the quantity where the consumer’s demand curve intersects the horizontal line at P = 15.
- Sum the two individual quantities to obtain the market quantity demanded at P = $15 (since the two consumers are the only buyers in the market, total quantity is the sum of each consumer’s quantity demanded at that price).

Why Option 1 (and any other explicit options) might be correct or incorrect depends entirely on those two points:
- If, at P = $15, a consumer’s demand curve shows a positive quantity demanded (greater than 0) for either Consumer 1 or Consumer 2, then that consumer contributes to the market quantity. The market quantity would then be the sum of the two individual quantities. In that case, the market quantity would not be 0 units unless both consumers have zero quantity demanded at P = $15.
- If both demand curves at P = $15 indicate zero quantity demanded (i.e., P = 15 is above both consumers’ maximum willingness to pay as shown by the intercepts of the curves), then the total market quantity would indeed be 0 units, matching the option stating 0 units.

Important note about missing information:
- The answer options list is empty in the provided data, so we cannot confirm how the test framed the choices (e.g., 0 units, 2 units, 4 units, etc.).
- To determine the correct numerical value from the figure, one must precisely read the quantity at P = 15 on each consumer’s demand curve and sum them. Without the ability to read those exact quantities from the image text here, we cannot definitively verify whether 0 units is correct.

Practical steps you would take with the figure if you had it in front of you:
- Locate P = 15 on the vertical price axis of Consumer 1’s demand graph and read the corresponding quantity on the horizontal axis (Q1).
- Repeat for Consumer 2’s demand graph to obtain Q2 at P = 15.
- Compute Market Q = Q1 + Q2.
- Compare this computed Market Q with the given answer choices to select the correct one.

In summary, determining the exact market quantity demanded at P = $15 requires reading the two individual demand curves at P = 15 and summing the resulting quantities. Because the answer option list is missing in the data you provided, I cannot confirm which choice corresponds to the correct arithmetic outcome. If the figure shows zero quantity for both consumers at P = 15, then the market quantity would be 0 units; otherwise, it would be the sum of the two individual quantities at that price.

Figure 4-2[table] Consumer 1 | Consumer 2 | [/table]Refer to Figure 4-2.If these are the only two consumers in the market, then the market quantity demanded at a price of $15 is

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