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Mathematics, 23.07.2021 22:10 regeana

Một lâm trường lập kế hoạch trồng một số ha rừng, theo đó mỗi tuần lâm trường phải trồng 15ha. Trên thực tế nhờ cải tiến kĩ thuật, lâm trường đã trồng được 20ha mỗi tuần. Do đó, lâm trường không những đã hoàn thành kế hoạch trước thời hạn 1 tuần mà còn trồng thêm được 5ha rừng. Hỏi theo kế hoạch, lâm trường phải trồng bao nhiêu ha rừng?

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Một lâm trường lập kế hoạch trồng một số ha rừng, theo đó mỗi tuần lâm trường phải trồng 15ha. Trên...

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