Предмет: Математика, автор: vovan0308

Помогите пожалуйста задачу номер 65 решить. знпю что ответ должен быть 2/3. но решение не знаю(

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Автор ответа: potapov19461
0
25% от 16 руб = 0,25*16 = 4 руб. На столько увеличили цену яблок.
16+4 = 20 руб. Столько стали стоить яблоки.
Если по 16 руб продали х кг, то по 20 руб продали (180 - х) кг. Выручили 16*х + 20 * (180 - х) руб.
Уравнение 16х + 20(180-х) = 3360
16х + 3600 - 20х = 3360
-4х = 3360-3600
-4х = -240
х = -240/(-4 0
х = 60 кг. продано по16 руб.
180-60 = 120 кг продано по 20 руб.
Находим отношение 120 к 180 =120/180, сокращаем на 60 и получаемто, что надо.
Автор ответа: vovan0308
0
спаибо!)
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