Suppose that during the past year, the price of a laptop computer fell from $2,100 to $1,820. During the same time period, consumer sales increased from 429,000 to 530,000 laptops. Calculate the elasticity of demand between these two price-quantity combinations by using the following steps. After each step, complete the relevant part of the table with the appropriate answers. (Note: For decreases in price or quantity, enter values in the Change column with a minus sign.) Original New Average Change Percentage Change Quantity Price Step 1: Fill in the appropriate values for original quantity, new quantity, original price, and new price. Step 2: Calculate the average quantity by adding the original quantity and the new quantity, and then dividing by two. Do the same for the average price. Step 3: Calculate the change in quantity by subtracting the original quantity from the new quantity. Do the same for the change in price. Step 4: Calculate the percentage change in quantity demanded by

Original New Average Change Percentage Change Quantity 429,000 530,000 (429,000 + 530,000) / 2 = 479,500 429,000 -530,000 = -101,000 -101,000 / 479,500 = -0.2106 Price $2,100 $1,820 ($2,100 + $1,820) / 2 = 1960 2,100 + 1,820 = 280 280 / 1960 = 0.1429 Price elasticity of demand = 0.2106 / 0.1429 = 1.47

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Suppose that during the past year, the price of a laptop computer fell from $2,100 to $1,820

Economics Dec 19, 2020

Suppose that during the past year, the price of a laptop computer fell from $2,100 to $1,820. During the same time period, consumer sales increased from 429,000 to 530,000 laptops.

Calculate the elasticity of demand between these two price-quantity combinations by using the following steps. After each step, complete the relevant part of the table with the appropriate answers. (Note: For decreases in price or quantity, enter values in the Change column with a minus sign.)

	Original	New	Average	Change	Percentage Change
Quantity
Price

Step 1: Fill in the appropriate values for original quantity, new quantity, original price, and new price.

Step 2: Calculate the average quantity by adding the original quantity and the new quantity, and then dividing by two. Do the same for the average price.

Step 3: Calculate the change in quantity by subtracting the original quantity from the new quantity. Do the same for the change in price.

Step 4: Calculate the percentage change in quantity demanded by dividing the change in quantity by the average quantity. Do the same to calculate the percentage change in price.

Step 5: Calculate the price elasticity of demand by dividing the percentage change in quantity demanded by the percentage change in price, ignoring the negative sign.

Using the midpoint method, the elasticity of demand for laptops is about _.

Expert Solution

Original	New	Average	Change	Percentage Change
Quantity	429,000	530,000	(429,000 + 530,000) / 2 = 479,500	429,000 -530,000 = -101,000	-101,000 / 479,500 = -0.2106
Price	$2,100	$1,820	($2,100 + $1,820) / 2 = 1960	2,100 + 1,820 = 280	280 / 1960 = 0.1429

Price elasticity of demand = 0.2106 / 0.1429 = 1.47

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