Задачи на сплавы и смеси. Корних Лев

Опубликовано: 06 Сентябрь 2026
на канале: Открытая Школа

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В раствор, содержащий 20 г соли, добавили 100 г воды, после чего концентрация соли уменьшилась на 10%. Сколько граммов воды содержал раствор первоначально?

Корних Лев,
МИФ ВГСПУ, 2020 год

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