1.4. The accompanying table gives part of the supply schedule for personal computers in the United States.

a. Calculate the price elasticity of supply when the price increases from $900 to $1,100 using the midpoint method.

b. Suppose firms produce 1,000 more computers at any given price due to improved technology. As price increases from $900 to $1,100, is the price elasticity of supply now greater than, less than, or the same as it was in part a?

c. Suppose a longer time period under consideration means that the quantity supplied at any given price is 20% higher than the figures given in the table. As price increases from $900 to $1,100, is the price elasticity of supply now greater than, less than, or the same as it was in part a?

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Price of computer $1,100 900 Quantity of computers supplied 12,000 8,000