If both supply and demand for a good increase at the same time,which of the following must also increase?

Question

Quizplus · Accepted Answer

When both supply and demand increase, the equilibrium quantity must also increase as both sides are willing and able to buy and sell more of the good. The equilibrium price may increase, decrease, or remain unchanged depending on the extent of the shifts in supply and demand. The use of substitutes and the price of substitute goods are not necessarily affected by the increase in both supply and demand.

If Both Supply and Demand for a Good Increase at the Same