Answer:
Price Elasticity of demand =3
Explanation:
The elasticity of demand indicates how the quantity demanded change when the price changes. Is defined by this equation:
Price Elasticity of Demand (PED)= Percentage change in Q/ Percentage change in P
In this case, the problem is giving both percentage changes:
Percentage change in Q= -15% (It is negative because the number of haircuts decreased)
Percentage change in P= +5%
PED= -15%/5%= -3
The PED is always negative because the demand curve has a negative slope. This happens because at lower prices the quantity demanded is high and at high prices the quantity demanded is low.