Вопрос школьника по предмету Математика
Из 25 кг яблок получилось 5 кг сушёных яблок. На сколько процентов яблоки потеряли свою массу при сушке?
Ответ учителя по предмету Математика
25-5=20(кг) — на столько потеряли массу в кг
20:25*100 = 0,8*100%= 80 % — на столько потеряли в процентах
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