на 2 полицях - 75 книжок на 1 -20% всіх книг. Скільки книг на 2 полиці - №25057120

на 2 полицях - 75 книжок на 1 -20% всіх книг. Скільки книг на 2 полиці
- Предмет:
  Математика
- Автор:
  basileowood
- 6 лет назад

Ответы 1

На першій у відсотках 100-20=80%75/100*80=60 книжок
- Автор:
  stevemkdh
- 6 лет назад
- 0
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