Question

Помогите пожалуйста и составьте условия пожалуйстарешить задачу составив уравнения: В магазин завезли фрукты и продали их за 3 дня. В первый день продали 30% всех фруктов, во второй - ⅖ остатка, а в третий день остальные 168 кг. Сколько всего килограммов фруктов завезли в магазин? (пустьх(кг) фруктов привезли в магазин, тогда...)​

Answer 1

Ответ:

Пусть всего завезли х кг фруктов,

тогда в первый день продали 0,3х,

а во второй день продали 0,4 остатка, т.е. 0,4(х-0,3х)=0,4*0,7х=0,28х.

В третий день продали 168 кг.

Составляем уравнение:

0,3х+0,28х+168=х

168=х-0,3х-0,28х

168=0,42х

х=168:0,42

х=400(кг)-фруктов завезли в магазин

Answer 2

Problem Analysis

To solve this problem, we need to find the total weight of the fruits that were brought to the store. We are given the information that the fruits were sold over a period of three days, with different percentages of the fruits being sold each day. We are also given the weight of the remaining fruits on the third day.

Solution

Let's assume that the total weight of the fruits brought to the store is h kg.

According to the given information: - On the first day, 30% of all the fruits were sold. - On the second day, 2/5 (or 40%) of the remaining fruits were sold. - On the third day, the remaining fruits weighed 168 kg.

To solve this problem, we can set up the following equations:

1. On the first day, 30% of all the fruits were sold: - Weight of fruits sold on the first day = 0.3h kg

2. On the second day, 2/5 (or 40%) of the remaining fruits were sold: - Weight of remaining fruits after the first day = h - 0.3h = 0.7h kg - Weight of fruits sold on the second day = 0.4 * (0.7h) kg

3. On the third day, the remaining fruits weighed 168 kg: - Weight of remaining fruits after the second day = 0.7h - 0.4 * (0.7h) kg = 168 kg

Now, we can solve the equation to find the value of h, which represents the total weight of the fruits brought to the store.

Calculation

Let's solve the equation:

Weight of remaining fruits after the second day = 0.7h - 0.4 * (0.7h) = 168 kg

Simplifying the equation:

0.7h - 0.28h = 168 kg

0.42h = 168 kg

Dividing both sides by 0.42:

h = 168 kg / 0.42

h = 400 kg

Therefore, the total weight of the fruits brought to the store is 400 kg.

Answer

The total weight of the fruits brought to the store is 400 kg.