October 2018 1 46 Report
Jika emas 18 karat mengandung 18/24 emas murni dan 6/24 campuran logam lain maka tentukan banyak emas murni
a. 48 gram emas 18 karat
b.120 gram emas 22 karat
c.180 gram emas 23 karat
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