Предмет: Алгебра, автор: voooddaacheek

Помогите пожалуйста, очень срочно‼️‼️‼️ 1) Змішали два сорта цукерок за ціною 12 грн і 15 грн за кілограм. Утворилося 15 кг асорті за ціною 210 грн. Скільки цукерок кожного сорту взяли для асорті?

Ответы

Автор ответа: Аноним

Ответ:

Объяснение:

Нехай х кг – цукерки по 12 грн. за кг, тоді (15 - х) кг цукерки по 15 грн. за кг. Рівняння:

12х + 15*(15 - х) = 15 * 14

12х + 225 - 15х = 210

-3х = 210 - 225

- 3х = - 15

х= - 15 : ( - 3)

х= 5 кг цукерки по 12 грн

15 - х = 15 - 5 = 10 кг цукерки по 15 грн

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