Jawab no 7 aja ya
Siswa smua 40 anak
nilai c = 20/100 x 40 = 8 anak
nilai d = 15/40 x 40 = 6 anak
nilai b = 40/100 x 40 = 16 anak
Nilai a = bnyak anak - (jumlah nilai b+c+d)
Nilai a = 40 - 30
Nilai a = 10 anak
Semoga membantu
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Jawab no 7 aja ya
Siswa smua 40 anak
nilai c = 20/100 x 40 = 8 anak
nilai d = 15/40 x 40 = 6 anak
nilai b = 40/100 x 40 = 16 anak
Nilai a = bnyak anak - (jumlah nilai b+c+d)
Nilai a = 40 - 30
Nilai a = 10 anak
Semoga membantu