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daoquynhanh0208
2 năm trước
Bài 1 : Nhà Minh có 1 mảnh vườn trồng hoa. Vườn chia thành nhiều luống, mỗi luống trồng được số cây hoa như nhau. Nếu tăng thêm 5 luống , mỗi luống bớt đi 2 cây thì số cây hoa toàn vườn ít đi 65 cây , nhưng nếu giảm đi 6 luống mỗi luống tăng thêm 4 cây thì số cây hoa toàn vườn sẽ tăng thêm 106 cây. Hỏi nhà Minh trồng bao nhiêu cây hoa? Bài 2 : 1 đoàn tàu phải vận chuyển 1 lường hàng . Nếu xếp vào mỗi toa 12 tấn thì còn thừa lại 4 tấn . Nếu xếp vào mỗi toa 17 tấn thì còn có thể chở thêm đc 56 tấn nữa . Hỏi đoàn tàu có mấy toa tàu và phải chở bao nhiêu tấn hàng ? Giúp em với mn ơi
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