Answer:
Step 1.
Ghe formula illustrates
Price Elasticity of Demand=percent change in quantity/percent change in price.
Step 2.
Midpoint formula states that:
percent change in quantity=Q2−Q1/(Q2+Q1)÷2×100
percent change in price=P2−P1/(P2+P1)÷2×100
Step 3. Now use the values provided in question.
percent change in quantity=433−283/(433+283)÷2×100=41.89.
percent change in price=0.67-0.89/(0.67+0.89)÷2×100= -28.20.
Step 4.
Now the values can put in to determine the price elasticity of demand:
Price Elasticity of Demand=percent change in quantity/percent change in price: 41.89/-28.20= -1.485.