25x78.5+(92+100+87)=
1962.5+279=
2241.5/28=80,0535714286
Jawab:
Penjelasan dengan langkah-langkah:
Rata rata 25 siswa = 78.5
=> 78,5 x 25/25 => 1963/25
Ada 3 anak nyusul dg nilai 92, 100 dan 87
=> (1963 + 92 + 100 + 87) / (25+3)
= 2242 / 28
= 80
Jadi rata2 kelas menjadi 80
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25x78.5+(92+100+87)=
1962.5+279=
2241.5/28=80,0535714286
Jawab:
Penjelasan dengan langkah-langkah:
Rata rata 25 siswa = 78.5
=> 78,5 x 25/25 => 1963/25
Ada 3 anak nyusul dg nilai 92, 100 dan 87
=> (1963 + 92 + 100 + 87) / (25+3)
= 2242 / 28
= 80
Jadi rata2 kelas menjadi 80