November 2018 1 102 Report
Jika emas 18 karat mengandung 18/24 emas murni dan 6/24 campuran logam lain, maka tentukan banyaknya emas murni dalam:
1.36 gram emas 18 karat
2.120 gram emas 22 karat
3.96 gram emas 23 karat
4.180 gram emas 24 karat
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