Question

Василько купив 2,5 кг печива першого виду по 36 грн за кілограм і 1,5 кг печива другого виду.Середня ціна купленого печива становила 39 грн.Скільки коштував кг печива другого виду?Помогите пожалуйста очень срочно

Answer 1

2.5+1.5=4 кг всього купили печива
39*4=156 грн заплатили все печиво
2.5*36=90 грн заплатили за все печиво першого виду
156-90=66 грн заплатили за все печиво другого виду
66:1.5=44 грн коштує 1 кг печива другого виду
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Answer 2

To find the cost per kilogram of the second type of cookies, we can use the given information.

Let's assume the cost per kilogram of the second type of cookies is x.

According to the given information: - Vasilyk bought 2.5 kg of the first type of cookies at a rate of 36 UAH per kilogram. - Vasilyk also bought 1.5 kg of the second type of cookies.

The average price of the purchased cookies was 39 UAH per kilogram.

To calculate the cost per kilogram of the second type of cookies, we can set up the following equation:

(2.5 * 36 + 1.5 * x) / (2.5 + 1.5) = 39

Simplifying the equation, we have:

(90 + 1.5x) / 4 = 39

Multiplying both sides of the equation by 4, we get:

90 + 1.5x = 156

Subtracting 90 from both sides of the equation, we have:

1.5x = 66

Dividing both sides of the equation by 1.5, we get:

x = 44

Therefore, the cost per kilogram of the second type of cookies is 44 UAH.

Please note that this calculation assumes a linear relationship between the quantity and the cost per kilogram of the cookies.