Question

Bila fungsi permintaan suatu barang Qd = 30-2p dan fungsi penawaran Qs = -3 + 4P, maka titik keseimbangan pasar adalah ...

Answer 1

Verified answer

Qd = 30 - 2P
Pd = -1/2 Q + 15

Qs = -3 + 4P
Ps = 1/4 Q + 3/4

Syarat keseimbangan pasar
Pd = Ps
-1/2 Q + 15 = 1/4 Q + 3/4
1/4 Q + 1/2 Q = 15 - 3/4
3/4 Q = 57/4
3Q = 57
Q = 19

P = -1/2 (19) + 15
P = -9,5 + 15
P = 5,5

Maka titik keseimbangan pasar
(19, 5.5)