If the quantity demanded of a commodity increases from 20 to 30 when there is an increase in price from N4 to N5, the elasticity of deman is_______

The elasticity of demand can be calculated using the formula: Elasticity of Demand = % Change in Quantity Demanded / % Change in Price We can calculate the percentage change in quantity demanded as: % Change in Quantity Demanded = ((New Quantity Demanded - Old Quantity Demanded) / Old Quantity Demanded) x 100% % Change in Quantity Demanded = ((30 - 20) / 20) x 100% % Change in Quantity Demanded = 50% We can calculate the percentage change in price as: % Change in Price = ((New Price - Old Price) / Old Price) x 100% % Change in Price = ((5 - 4) / 4) x 100% % Change in Price = 25% Substituting these values in the formula, we get: Elasticity of Demand = 50% / 25% Elasticity of Demand = 2 Therefore, the elasticity of demand is 2.