Flynn Boyd
07/06/2024 · Junior High School
Câu 5. Một thùng nhựa đựng 100 lít nước. Biết một lít nước cân nặng \( 0,8 \mathrm{~kg} \), thùng rỗng cân nặng \( 2,5 \mathrm{~kg} \). Thùng nước đó cân nặng số ki - lô -gam là: \( \begin{array}{llll}\text { A. } 10,5 \mathrm{~kg} & \text { B. } 82,5 \mathrm{~kg} & \text { C. } 825 \mathrm{~kg} & \text { D. } 105 \mathrm{~kg}\end{array} \)
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Thùng nước cân nặng 82,5 kg. Đáp án đúng là B.
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