Question

В 3 класса поставили 45 новых школьных столов, поровну в каждый класс. Потом из одного класса вынесли 3 стола, а из другого-2 стола. Сколько столов в каждом классе?

Answer 1

1) 45:3=15 (ст.) - в каждом классе
2) 15-3=12 (ст.) - осталось в 1-м классе
3) 15-2=13 (ст.) - во 2-м классе
Ответ: 12 столов, 13 столов и 15 столов.

Answer 2

Calculating the Number of Desks in Each Class

To solve this problem, we can use a simple algebraic equation. Let's denote the total number of desks in each class as x. We know that there are 45 new desks in total and they are distributed equally among the classes. After that, 3 desks are taken from one class and 2 desks are taken from another class.

Equation Setup

We can set up the following equation to represent the given scenario: - Total desks = 45 - Desks taken from one class = 3 - Desks taken from another class = 2

The equation can be represented as: 2x + 3 = 45

Solving for x

Now, let's solve for x: 2x = 45 - 3 2x = 42 x = 42 / 2 x = 21

Answer

So, there were originally 21 desks in each class.