Расчёт издержек фирмы. Информация о деятельности фирмы

При Q = 5, AFC = 4, AFC = FC / Q, следовательно, FC = 5 × 4 = 20 при любом объёме выпуска.
Заполняем столбец FC полностью.
VC (1) = TC – FC = 30 – 20 = 10
АС (1) = TC / Q = 30 / 1 = 3
AVC (1) = VC / Q = 10 / 1 = 10
AFC (1) = FC / Q = 20 / 1 = 20
TC (0) = FC + VC = 20 + 0 = 20
MC (1) = (TC(1) – TC(0)) / (1 – 0) = 30 – 20 = 10
TC (2) = FC + VC = 20 + 18 = 38
АС (2) = TC / Q = 38 / 2 = 19
AVC (2) = VC / Q = 18 / 2 = 9
AFC (2) = FC / Q = 20 / 2 = 10
MC (2) = (TC(2) – TC(1)) / (2 – 1) = 38 – 30 = 8
TC (3) = AC × Q = 15 × 3 = 45
VC (3) = TC – FC = 45 – 20 = 25
AVC (3) = VC / Q = 25 / 3
AFC (3) = AC – AVC = 15 – 25/3 = 20/3
MC (3) = (TC(3) – TC(2)) / (3 – 2) = 45 – 38 = 7
VC (4) = AVC × Q = 7 × 4 = 28
TC (4) = 28 + 20 = 48
АС (4) = TC / Q = 48 / 4 = 12
AFC = AC – AVC = 12 – 7 = 5
MC (4) = (TC(4) – TC(3)) / (4 – 3) = 48 – 45 = 3
MC (5) = (TC(5) – TC(4)) / (5 – 4) = TC(5) – TC(4), 
отсюда
TC (5) = MC(5) + TC(4) = 2 + 48 = 50
VC (5) = TC – FC = 50 – 20 = 30
АС (5) = TC / Q = 50 / 5 = 10
AVC (5) = AC – AFC = 10 – 4 = 6
MCN=TCN-TC(5)N-5=VCN+FC-VC5-FCN-5=VCN-30N-5=1
VC(N) = AVC(N)*N = 3,5 * N
3,5*N-30N-5=1
2,5 × N = 25
N = 10
VC (10) = 3,5 × 10 = 35
ТС (10) = VC + FC = 35 + 20 = 55
AC (10) = TC / Q = 55 / 10 = 5,5
AFC (10) = FC / Q = 20 / 10