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2023-10-08 09:30:33
Bao gạo cân nặng số ki-lô-gam là :
10 : 1/4 = 40 (kg)
2/5 bao gạo nặng số ki-lô-gam là :
40 x 2/5 = 16 ( kg )
Đáp số : 16 kg