QD = 50 - 2p QS = 30 + 3p

Economics
QD = 50 - 2p QS = 30 + 3p

ScanSolve AI Answer

To find the equilibrium price and quantity, we set the quantity demanded (QDQ_D) equal to the quantity supplied (QSQ_S).

Step 1: Set QD=QSQ_D = Q_S. 50−2p=30+3p50 - 2p = 30 + 3p

Step 2: Solve for pp. 50−30=3p+2p50 - 30 = 3p + 2p 20=5p20 = 5p p=205p = \frac{20}{5} p=4p = 4

Step 3: Substitute the equilibrium price (p=4p=4) into either the demand or supply equation to find the equilibrium quantity (QQ). Using the demand equation: QD=50−2(4)Q_D = 50 - 2(4) QD=50−8Q_D = 50 - 8 QD=42Q_D = 42 Using the supply equation (to verify): QS=30+3(4)Q_S = 30 + 3(4) QS=30+12Q_S = 30 + 12 QS=42Q_S = 42

The equilibrium price is p=4p=4 and the equilibrium quantity is Q=42Q=42.

The equilibrium price is ∗4∗\boxed{*4*} The equilibrium quantity is ∗42∗\boxed{*42*}

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