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Alasan:
jumlah nilah 5 siswa = 5 * 80 = 400
jumlah nilai 6 siswa = 6 * 85 = 510
selisih = 110 -> artinya Andi mendapat nilai 110
Tidak mungkin
Kalau Rata 85 jadi .. 6 x 85 = 510
jadi nilai andi = 510-400= 110 Tidak mungkin