Bài 14.Một chiếc xe tải khi đi qua trạm cân, người ta cân được 4,5 tấn. Biết xe có khối lượng 2,3 tấn và mỗi kiện hàng trên xe có khối lượng 20kg. Hỏi xe chở bao nhiêu kiện hàng?

2 câu trả lời

Đáp án:

 Xe chở 110 kiện hàng 

Giải thích các bước giải:

Tóm tắt:

M=4,5 tấn

mxe=2,3 tấn

m1=20kg

Khối lượng của các kiện hàng là:
\[m = 4,5 - 2,3 = 2,2\tan  = 2200kg\]

Số kiện hàng mà xe chở là;
\[n = \frac{m}{{{m_1}}} = \frac{{2200}}{{20}} = 110\]

Vậy xe chở 110 kiện hàng 

Khối lượng của kiện hàng là:

$m=4,5-2,3=2,2tấn=2200kg$

⇒ Xe chở số kiện hàng là: $n=\dfrac{2200}{20}=110$

 

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