Fungsi permintaan akan suatu barang

Fungsi permintaan akan suatu barang ditunjukkan oleh persamaan P = 15 – Q, sedangkan penawarannya P = 3 + 0.5 Q. Terhadap barang tersebut dikenakan pajak sebesar 3 perunit. Berapa harga keseimbangan dan jumlah keseimbangan sebelum pajak dan berapa pula jumlah keseimbangan sesudah pajak ?

Hasil (Inggris) 1:

The demand function of an item is indicated by the equation P = 15 – Q, while its bid 3 + 0.5 P = q. Against the goods are subject to a tax of 3 perunit. What price balance and the balance amount before tax and how did the number of balance after tax?

Hasil (Inggris) 2:

The function of the demand for goods is shown by the equation P = 15 - Q, while the bid P = 3 + 0.5 Q. The goods are taxed at 3 per unit. What price balance and the balance amount before taxes and how the amount of the balance after taxes?