Consider a market where supply and demand are given by Qx s = -16+Px and Qd=92-2Px suppose the gouvernment imposes a price floor of $40, and agrees to purchase any and all units consumers do not buy at the floor price of $40 per unit. determine the cost to the gouvernment of buying firm's unsold units. Compoute the lost social welfare (deadweight loss) that stems from the $40 price floor
Government cost of unsold units
"Q_S=P_x-16"
"Q_d=92-2P_X"
Initial equilibrium points:
"P_x-16=92-2P_x"
"P_x+2P_x=92+16"
"3P_x=108"
"P_x=36" "Q_S\\to 36-16=20" "Q_d\\to 92-2(36)=20"
Price Floor "(P_f)=\\$ 480"
"Q_s=40-16=24"
"Q_d=92-2(40)=12"
Unsold units = "24-12=12"
Cost of unsold units= "12 \\times 40=\\$ 480"
Cost of unsold units= Government cost = $ 480
Dead-weight loss
="(Q_d\\ at P_x=36)- (Q_d\\ at\\ P_x =40)"
= "20-10=10"
cost = "10\\times 40=\\bold{\\$400}"
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