Harga Naik = Kesejahteraan Turun
Pemerintah memberikan subsidi Pendapatan
Pasar
Persaingan Sempurna
Diketahui
Struktur Biaya Produksi
TC =
Q3 – 75 Q2 + 1500Q + 1800
P = 300
Ditanyakan
Profit = ........... ?
TR = P x Q
= 300 Q
MR = 300
MC = 3Q2 – 150Q + 1500
300 = 3Q2 – 150Q + 1500
= 3Q2 – 150Q + 1200
= (3Q – 30) (Q – 40)
3Q = 30 Q
= 40
Q1
= 10 Q2 = 40
MR MC
-------- = ---------
Q Q
MR” = 0
MC = 6Q – 150
Q110 = 6 (10) – 150
= -90
Q240 = 6 (40) – 150
= 240 – 150
= 90
Profit = TR
– TC
= (40)
(300) – (40)3 – 75 (40)2 + 150 (40) + 1800
= 12.000 – 64.000 – 1200 + 60.000 +
1800



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