Rata-rata nilai 16 anak
[tex] \frac{(36 \times 76) - (20 \times 64)}{(36 - 20)} \\ \\ \frac{(2.736 - 1.280)}{16} \\ \\ \frac{1.456}{16} \\ \\ 91[/tex]
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Rata-rata nilai 16 anak
[tex] \frac{(36 \times 76) - (20 \times 64)}{(36 - 20)} \\ \\ \frac{(2.736 - 1.280)}{16} \\ \\ \frac{1.456}{16} \\ \\ 91[/tex]