Final answer:
To find the consumer surplus in the gasoline market at a price of $2 per gallon, we need to calculate the area between the demand curve and the price line. However, the answer is not among the options provided.
Step-by-step explanation:
In order to find the total amount of consumer surplus in the gasoline market, we need to locate the demand curve shown in the question. We see that the equilibrium price in the market is $1.40 per gallon, but the question asks us to find the consumer surplus at a price of $2 per gallon. Since $2 per gallon is higher than the equilibrium price, the quantity demanded would be lower. Let's assume that at $2 per gallon, the quantity demanded is 400 gallons. To find the total consumer surplus, we need to calculate the area between the demand curve and the price line. The formula for calculating consumer surplus is (1/2) imes (base imes height). The base is the difference between the quantity demanded at the given price and the quantity demanded at the equilibrium price, which is 400 - 550 = -150. The height is the difference between the given price and the equilibrium price, which is 2 - 1.40 = 0.60. Therefore, the total consumer surplus is (1/2) imes (-150) imes 0.60 = -45 square units. However, since consumer surplus is a positive concept, we ignore the negative sign and the magnitude of the consumer surplus is 45 square units. So the correct answer is not among the options provided.