Question

4. В первой коробке в 2 раза больше шаров, чем во второй. Когда из первой коробкии взяли 30 шаров, а во вторую положили 10, то шаров в обоих коробках стало поровну. Сколько шаров было в каждой коробке?​

Answer 1

Пусть во второй коробке было х шаров, тогда в первой их было 2х. Дальше мы берем из первой коробки 30 шаров, их становится 2х-30, а во вторую добавляем 10, там их становится х+10, шаров становится поровну, получаем уравнение:

2х - 30 = х + 10 // - х + 10

х = 40 - вторая коробка

40 * 2 = 80 - первая коробка

Ответ: 1 коробка- 80 шаров, 2- 40.

Answer 2

Ответ:

да он все правильно ответил !

Answer 3

Problem Analysis

We are given two boxes, and the number of balls in the first box is twice the number of balls in the second box. After taking 30 balls from the first box and putting 10 balls into the second box, the number of balls in both boxes becomes equal. We need to find the number of balls in each box.

Solution

Let's assume the number of balls in the second box is x. According to the problem, the number of balls in the first box is twice the number of balls in the second box, so the number of balls in the first box is 2x.

After taking 30 balls from the first box, the number of balls in the first box becomes 2x - 30. After putting 10 balls into the second box, the number of balls in the second box becomes x + 10.

According to the problem, the number of balls in both boxes becomes equal. So we can set up the following equation:

2x - 30 = x + 10

Simplifying the equation, we get:

x = 40

Therefore, there were 40 balls in the second box and 80 balls in the first box.

Answer

There were 40 balls in the second box and 80 balls in the first box.