If a price of corn is $3.00 a bushel, 5,000 bushels would be demanded.

If a price of corn is $3.00 a bushel, 5,000 bushels would be demanded. If the price rises to $4.00 a bushel, 4,000 bushels would be demanded.

a. What is the (arc) price elasticity of demand?
b. Based on this answer, if the price of corn rose to $5.00 a bushel, what would be the demand for corn?
c. If the price of corn decreased from $4.00 to $3.00 a bushel, what would be the change in total revenue for sellers of corn?
d. If the price of corn increased from $4.00 to $5.00 a bushel, what would be the change in total revenue for sellers of corn?

ANSWER

(a) -0.778; (b) 3,309; (c) -$1,000; (d) +$545