Question

СРОЧНО!!! Собранную чернику сушили три дня. При этом, в первый день черника потеряла в весе 60%, во второй 40%, и в третий 10%. Вес полученной черники составил 864 г. Сколько черники было собрано. Ответ дайте в килограммах.

Answer 1

Ответ:

36кг

Пошаговое объяснение:

Возьмем за X исходный вес

Получим уравнение

X*0.6*0.4*0.1 = 864

0.024x = 864

x= 864/0.024

x= 36000 грамм = 36кг

Answer 2

Problem Analysis

To solve this problem, we need to determine the weight of the freshly picked blueberries before they were dried. We are given that the blueberries lost 60% of their weight on the first day, 40% on the second day, and 10% on the third day. We are also given that the weight of the dried blueberries is 864 grams.

Solution

Let's assume the weight of the freshly picked blueberries is x kilograms.

On the first day, the blueberries lost 60% of their weight, which means they retained 40% of their original weight. Therefore, the weight of the blueberries after the first day is 0.4x kilograms.

On the second day, the blueberries lost 40% of their weight, which means they retained 60% of their weight from the first day. Therefore, the weight of the blueberries after the second day is 0.6 * 0.4x = 0.24x kilograms.

On the third day, the blueberries lost 10% of their weight, which means they retained 90% of their weight from the second day. Therefore, the weight of the blueberries after the third day is 0.9 * 0.24x = 0.216x kilograms.

We are given that the weight of the dried blueberries is 864 grams, which is equal to 0.864 kilograms. Therefore, we can set up the following equation:

0.216x = 0.864

To find the value of x, we can divide both sides of the equation by 0.216:

x = 0.864 / 0.216

Simplifying the equation, we get:

x = 4

Therefore, the weight of the freshly picked blueberries was 4 kilograms.

Answer

The weight of the freshly picked blueberries was 4 kilograms.