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2. D
3. E (Ilustrasi menunjukkan penyebab kelangkaan karena bencana sehingga E)
4. B (Penyebab permasalahan adlaah kelangkaan)
5. C
6. D
7. B
8. Jika pendapatan naik, permintaan turun (Tidak ada jawabannya)
9. Q = 20 - 4P
ΔQ/ΔP = -4
Q = 20 - 4 (4)
= 4
Elastisitas = P/Q x ΔQ/ΔP
= 4/4 x - 4
= -4
= 4(C)
10 . E
11. Q = 6 - 0,25P
0,25P = 6 - Q
P = 24 - 4Q
TR = 24Q - 4Q²
MR = 24 - 8Q
= 24 - 8 (2)
= 8 (C)
12. Q0 = 50 - 5P
5P = 50 - Q
P = 10 - 0,2Q
TR = 10Q - 0,2Q²
MR = 10 - 0,4Q (B)
13. Qd = -2P + 15
Qs = -5 + 3P - 5
Qs = 3P - 10
3P - 10 = -2P + 15
5P = 25
P = 5
Q = 5
(5,5) (D)
14. P = 16 - 2Q
TR = 16Q - 2Q² (D)
15. Elastisitas = P/Q x ΔQ/ΔP
= 4.500 / 45 x -15/2.100
= -1.500 / 2.100
= 0,71 (A)
16. C
17. B
18. Elastisitas = 800/40 x 4/200
= 0,4 (B)
19. Elastisitas = 2.000/30 x 15/500
= 2 (E)
20. C
21. D
22. D
23. Elastisitas = 120.000 / 40 x - 20/30.000
= -2
= 2 (Elastis) (A)
24. C
25. A
26. D