Answer:
c)-0.67
Explanation:
Calculation to determine what the price elasticity equal to
Using this formula
Price Elasticity of Demand (PED)=dQ/dP*Q/P
Let plug in the formula
Price Elasticity of Demand (PED)=d(100-4p)/dp*p/100-4p
Price Elasticity of Demand (PED)=-4*p/100-4p
at p=$10
Price Elasticity of Demand (PED)=-4*$10/100-4($10)
Price Elasticity of Demand (PED)=-40/60
Price Elasticity of Demand (PED)=-2/3
Price Elasticity of Demand (PED)=-0.666
Price Elasticity of Demand (PED)=-0.67 Approximately
Therefore the price elasticity equal to -0.67
