試題詳解

14. The demand for widgets is given by Q = 100–2P, the supply is given by Q = –20 + P. The government sets the price ceiling at P̄ which results in the deficit 30. Find P̄ .
(A) P̄ = 10
(B) P̄ = 20
(C) P̄ = 30
(D) P̄ = 40