September 2018 1 72 Report
Berat satu lusin bolpoin dan 8 pensil 44 gram . berat 9 bolpoin dan 16 pensil 58 gram.jika semua bolpoin dimasukkan dalam plastik I,sedangkan semua pensil dimasukkan kedalam plastik II ,tentukan selisih berat isi kedua plastik tsb..

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