The accompanying table shows the price and yearly quantity sold of souvenir T-shirts in the town of Crystal Lake according to the average income of the tourists visiting. Price of T-Shirts Quantity of T-Shirts demanded when the average tourist income is $20,000 Quantity of T-shirts demanded when the average tourist income is $30,000 $4 $3000 5000 $5 $2400 4200 $6 $1600 3000 $7 $800 1800 1. Using the midpoint method, calculate the price elasticity of demand when the price of a T-shirt rises from $5 to $6 and the average tourist income is $20,000. Also calculate it when the average tourist income is $30,000. 2. Using the midpoint method, calculate the income elasticity of demand when the price of a T-shirt is $4 and the average tourist income increases from $20,000 to $30,000. Also calculate it when the price is $7.

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Chapter4: Supply And Demand: An Initial Look
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The accompanying table shows the price and yearly quantity sold of souvenir T-shirts in the town of Crystal Lake according to the average income of the tourists visiting.

Price of T-Shirts Quantity of T-Shirts demanded when the average tourist income is $20,000 Quantity of T-shirts demanded when the average tourist income is $30,000
$4 $3000 5000
$5 $2400 4200
$6 $1600 3000
$7 $800 1800

1. Using the midpoint method, calculate the price elasticity of demand when the price of a T-shirt rises from $5 to $6 and the average tourist income is $20,000. Also calculate it when the average tourist income is $30,000.

2. Using the midpoint method, calculate the income elasticity of demand when the price of a T-shirt is $4 and the average tourist income increases from $20,000 to $30,000. Also calculate it when the price is $7.

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