John was ordering orange cones to use for soccer drills during practices. If John decided to purchase cones now, he would buy 10 sets at $5 per set. If he decided to purchase the cones at a later time when the demand decreased, he would purchase 14 sets at $3 per set. Using the mid-point formula, the own-price elasticity of the soccer cones is .

The own-price elasticity of the soccer cones is -0.67

The computation of the own-price elasticity of the soccer cones is as follows:

We know that

The Elasticity of demand is

= (change in quantity ÷ average quantity) ÷ (change in price ÷ average price)

Here

Change in quantity = 14 - 10 = 4

average quantity = (14 + 10) ÷ 2 = 12

change in price = 3 - 5 = -2

average price = (3 + 5) ÷ 2 = 4

So,

The Elasticity of demand is

= (4 ÷ 12) ÷ (-2 ÷ 4)

= -0.67

Therefore we can conclude that the own-price elasticity of the soccer cones is -0.67

Learn more about the price elasticity of demand here:

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