Perbandingan umur Ani dan Beni adalah 2 : 5. Jumlah umur Ani dan Beni adalah 42 tahun. Berapakah umur Beni?
Umur Beni
5/2+5
- 5/7
- 5/7 × 42
- 5×42/7
- 210/7
- 30 tahun
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Umur Ani : Umur Beni
a : b
2 : 5
Umur Ani = 2/2+5 × 42 = 2/7 × 42 = 2 × 6 = 12 th
Umur Beni = 5/2+5 × 42 = 5/7 × 42 = 5 × 6 = 30 th
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