August 2018 1 58 Report
10 tahun yg akan datang perbandingan usia antara Paman dan Bibi = 8 : 7. Jika perbandingan usia mereka sekarang = 6 : 5. Maka jumlah usia mereka sekarang adalah... tahun. [mohon beri penjelasan cara penyelesaiannya]
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