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Nilai 3 siswa lainnya = 3 × 8 = 24
Nilai 45 siswa = 273 + 24 = 297
Rata-rata nilai 45 siswa= 297 ÷ 45 = 99 ÷ 15 = 33 ÷ 5 = 6,6
Maka nilai rata-rata sekarang adalah 6,6