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На полке стояли книги. Сначала с полки сняли 25% всех книг,а потом 70% оставшихся книг. После этого на полке осталось 27 книг . Сколько книг было на полке первоначально .
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Предмет:
Математика -
Автор:
macey4mvt - 5 лет назад
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Ответы 1
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1 - 70 =30%=0,3 это оставшиеся 27 книг27:0,3=90книг осталось после того как сняли книги в первый раз1 - 25=75%=0,75 это оставшиеся 90 книг90:0,75=120книг стояло на полке первоначально
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Автор:
karmah23b - 5 лет назад
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Предмет:
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Автор:
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Пересказ The united states of america
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Предмет:
Английский язык -
Автор:
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Предмет:
Математика -
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