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Verified answer
8.pukul 7 = 13C
pukul 12 = 13 + 2.(12-7)
= 13 + 2.5
= 13 + 10
= 23 C
pukul 22 = 23 - 1,5 (22-12)
= 23 - 15
= 8C ................(A)
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