The price elasticity of demand for a normal good is 2.4 and the income elasticity of demand is 1.9. f there is an increase in price of 8 percent and a simultaneous 6 percent increase in income, quantity demanded will change by percent. (Enter your response rounded to one decimal place and inolude a minus sign if necessary.) Solution Price elasticity of demand 2.4 Income elasticity of demand 1.9 With the Increase in Price of 8% Quantity demanded will change by (8*2.40): 19.20% Note: There will not be any effect of change in income on Quantity demanded..