The individual demand for corn for each of these consumers as given in Exhibit 3-1.
QD = 40 - P
With Market Price, P = $5
Quantity Demanded, QD = 40 - 5
Please check the attached image for a diagram of exhibit 3-1
The total quantity demanded can be found by adding the sum of the quantity demanded at $5.
Jane doesn't demand at $5, so her quantity demanded is 0
For Henry it is 8
For Bob, it is 17
Total quantity demanded ia 25
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