Toán thực tế (033)





Hai anh em cùng đo khoảng cách giữa hai điểm A
và B bằng bước chân. Mỗi bước của anh dài 54cm, của em dài 42cm. Họ cùng bước
đi từ A và khi bước chân cuối cùng vừa đến B thì có đúng 50 lần bước chân của
hai anh em trùng nhau. Tính khoảng cách AB.

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