Price rises from $10 to $11, and the quantity demanded falls from 100 units to 95 units. What is the price elasticity of demand using the midpoint formula between these two prices in absolute terms (round to 2 decimal places)

0.54

Explanation:

Price elasticity of demand measures the responsiveness of quantity demanded to changes in price of the good.

Price elasticity of demand = midpoint change in quantity demanded / midpoint change in price  

Midpoint change in quantity demanded = change in quantity demanded / average of both demands

change in quantity demanded  = 100 - 95 = 5

average of both demands = (100 + 95) / 2 = 97.5

Midpoint change in quantity demanded = 5 / 97.5 = 0.051282

midpoint change in price = change in price / average of both price

change in price = $11 - $10 = 1

average of both price = ($11 + $10) / 2 = 10.5

midpoint change in price = 1 / 10.5 = 0.095238

Price elasticity of demand =  0.051282 / 0.095238 = 0.54

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