Final answer:
At the target pricing set at 6, under a price floor, suppliers will bring 6 units to the market. The quantity demanded at this price is 4 units, but the number of units exchanged will be 6 because the government guarantees the purchase of surplus.
Step-by-step explanation:
The student's question involves finding out how many units are exchanged under a government-imposed price floor. In general, the quantity exchanged in the market is determined where the quantity demanded (Qd) equals the quantity supplied (Qs).
However, with a price floor set above the equilibrium price, the quantity demanded will be less than the quantity supplied. We are given Qs(P) = P and Qd(P) = 10 - P and a target price set at 6. Without a price floor, market equilibrium is where Qd = Qs.
Using the information provided, which seems to contain equations not directly related to the initial question, we observe that at the target price of 6, the quantity supplied would be 6 units (since Qs is simply P in this case), and the quantity demanded would be 4 units (since Qd(6) = 10 - 6).
Nevertheless, because of the price floor, suppliers are guaranteed a price of 6, so they will bring 6 units to market. If we assume that the government purchases any surplus, then the number of units exchanged will be equal to the quantity supplied, which is 6 units.
It should be noted that while price floors can ensure producers receive a certain minimum price for their goods, it can also lead to market inefficiencies, such as surpluses where the quantity supplied is greater than the quantity demanded, which is the case here.