引用第0樓rBB於2008-12-31 11:48發表的“f4 econ問題”: 活雞供應少,因此賣得好貴..但仲好多人買 係有以下邊個情況? change in demand change in quantity demand .......
應該係本身都有excess demand.... 然後「活雞供應少」,我諗你係想講「活雞供應減少」,咁change in supply,條supply curve shift left~ 咁個equilibrium price 會上升,然後equilibrium quantity 不變~ 咁就做到price 上升,excess demand亦擴大...
唔知你條題目係咪真係我估咁,最後俾成條題目出黎~ |