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800 + n = 82(12)
n = 984 - 800
n= 184
rata rata 2 siswa = 184/2 = 92
jumlah siswa
80 = jumlah nilai 10 siswa
10
jumlah nilai 10 siswa = 800
Rata2 12 anak = Jumlah nilai 12 anak
jumlah anak
82 = 800 + jumlah nilai 2 anak
12
984 = 800 + jumlah nilai 2 anak
jumlah nilai 2 anak = 184