A deck of cards with solely numbered diamonds and spades is used to set up a market. The diamonds indicate demand, since number 2 symbolizes a buyer willing to spend $2, number 3 represents a buyer wanting to pay $3, and so on until number 10. Similarly, the spades determine supply in that number 2 denotes a seller prepared to accept a price of $2. There are nine buyers and nine sellers, each with one card. (See the attached graph)
A) The graph of supply and demand is shown below. When demand matches supply at a price of $6, the equilibrium is reached. The competitive price is $6, and the equilibrium quantity is 6.
It is important to note that the type of trade that is taking place here is distinct. A number 2 spade is only prepared to sell to a number 10 diamond since it pays the biggest redemption.
Similarly, spade numbers 3, 4, and 5 are only prepared to sell to diamond numbers 9, 8, and 7. With their elimination, numbers 2 and 6 of spades will be able to sell to numbers 10 and 6 of diamonds, but the remaining spades will be left holding the bag.
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