quantity will fail Di MacBook Air 6 5 SolutionIn the diagram

Solution

In the diagram to the right, when demand increases, excess demand develops at the original price. Equilibrium price will rise and the equilibrium quantity will also rise as a new equilibrium is established.

Whenever there is an increase in demand at any given price, other factors including supply staying constant, there will be an excess demand condition because at that price now the demand is greater than the supply. Thus to reach the equilibrium the price and quantity will have to rise.