Question

Школьные Знания.com Задай вопрос из школьного предмета nyapoka2 5 - 9 классы Математика 8+4 б В первый день в магазине продали 1/4 овощей,во второй день продали 0,4 оставшихся овощей,остальное количество-в третий день.В третий день продали на 570 кг овощей больше,чем во второй день.Сколько тонн овощей продали за три дня ? Только без иксов напишите только решение

Answer 1

хкг - за три дня

І - 1/4=0,25х

ІІ - (х-0,25х)*0,4=0,3х    } х

ІІІ - 0,3х+570

 

0,25х+0,3х+0,3х+570=х

0,15х=570

х=3800(кг)

Ответ:3800кг овощей продали за три дня

Answer 2

Problem Analysis

To solve this problem, we need to find the total amount of vegetables sold over three days. On the first day, 1/4 of the vegetables were sold. On the second day, 0.4 of the remaining vegetables were sold. The remaining vegetables were sold on the third day, and the amount sold on the third day was 570 kg more than the amount sold on the second day.

Solution

Let's break down the problem step by step:

1. On the first day, 1/4 of the vegetables were sold. Let's represent the total amount of vegetables as V. - The amount of vegetables sold on the first day is 1/4 * V. - The remaining amount of vegetables after the first day is V - 1/4 * V.

2. On the second day, 0.4 of the remaining vegetables were sold. - The amount of vegetables sold on the second day is 0.4 * (V - 1/4 * V). - The remaining amount of vegetables after the second day is (V - 1/4 * V) - 0.4 * (V - 1/4 * V).

3. The remaining vegetables were sold on the third day, and the amount sold on the third day was 570 kg more than the amount sold on the second day. - The amount of vegetables sold on the third day is 0.4 * (V - 1/4 * V) + 570.

4. To find the total amount of vegetables sold over three days, we add up the amounts sold on each day: - Total amount of vegetables sold = 1/4 * V + 0.4 * (V - 1/4 * V) + 0.4 * (V - 1/4 * V) + 570.

Now, let's simplify the equation and solve for the total amount of vegetables sold.

Calculation

1. Simplify the equation: - Total amount of vegetables sold = 1/4 * V + 0.4 * (V - 1/4 * V) + 0.4 * (V - 1/4 * V) + 570. - Total amount of vegetables sold = 1/4 * V + 0.4 * V - 0.1 * V + 0.4 * V - 0.1 * V + 570. - Total amount of vegetables sold = 1/4 * V + 0.8 * V - 0.2 * V + 0.8 * V - 0.2 * V + 570. - Total amount of vegetables sold = 2.4 * V + 570.

2. Now, we need to find the value of V. Unfortunately, the problem does not provide enough information to determine the value of V. We need either the value of V or additional information to solve the problem.

Therefore, without the value of V or additional information, we cannot determine the total amount of vegetables sold over three days.

Please let me know if there is anything else I can help you with.