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Помогите решить задачу . Шариковая ручка стоит 40 руб. Какое наибольшее число таких ручек можно будет купить на 900 руб после повышения цены на 15% срочно нужно
Ответы 1
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1) 100% + 15% = 115% - цена ручки после повышения в процентах
2) 115% от 40 руб = 1,15 · 40 = 46 руб - цена ручки после повышения
3) 900 руб : 46 руб ≈ 19,57
Количество ручек - это целое число, поэтому ответ 19 ручек.
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Автор:
mookiemosley - 5 лет назад
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