Question

Задача на сообразительность. Миша сказал: "У меня в двух карманах 28 руб, в правом столько двухрублевых монет, сколько в левом пятирублевых. Сколько у меня денег в каждом кармане?. Помогите пожалуйста. Это задача 4 класса

Answer 1

28 рублей. Составим все комбинации из 2х-рублевых и 5-рублевых монет, которые возможны: 

пятирублевых : 0 , двухрублевых  : 14
пятирублевых : 2 , двухрублевых : 9
пятирублевых : 4 , двухрублевых : 4

Нас устраивает только третий случай, так как их количество равно, значит в одном кармане было 4 пятирублевых монеты (итого 20 рублей), в другом 4 двухрублевых (итого 8 рублей)

Ответ: в одном кармане 20 рублей, в другом 8 рублей

Answer 2

В правом  пятирублёвых 4монеты
 , а   в левом двухрублёвых  тоже 4монеты
   , вот и получается всего 28
5x4=20
2x4=8

Answer 3

Problem Analysis

In this problem, we are given that Misha has 28 rubles in total in two pockets. The right pocket contains only two-ruble coins, and the left pocket contains only five-ruble coins. We need to determine how much money Misha has in each pocket.

Solution

Let's assume that Misha has x two-ruble coins in the right pocket and y five-ruble coins in the left pocket.

According to the problem statement, the total amount of money in both pockets is 28 rubles. Therefore, we can write the following equation:

2x + 5y = 28

To solve this equation, we can use trial and error or substitution. Let's use substitution to find the values of x and y.

We can rearrange the equation to solve for x in terms of y:

2x = 28 - 5y x = (28 - 5y) / 2

Now, we can substitute this value of x into the equation and solve for y:

2 * ((28 - 5y) / 2) + 5y = 28 28 - 5y + 5y = 28 28 = 28

The equation simplifies to 28 = 28, which is always true. This means that there are infinitely many solutions to the problem. We can choose any value for y and find the corresponding value of x.

For example, if we choose y = 0, then x = (28 - 5 * 0) / 2 = 14. This means that Misha has 14 two-ruble coins in the right pocket and no five-ruble coins in the left pocket.

Alternatively, if we choose y = 5, then x = (28 - 5 * 5) / 2 = 9. This means that Misha has 9 two-ruble coins in the right pocket and 5 five-ruble coins in the left pocket.

Therefore, there are multiple possible solutions to this problem, depending on the value chosen for y.

Answer

The amount of money Misha has in each pocket depends on the number of five-ruble coins in the left pocket. There are multiple possible solutions to this problem. For example, if Misha has no five-ruble coins in the left pocket, he will have 14 two-ruble coins in the right pocket. If Misha has 5 five-ruble coins in the left pocket, he will have 9 two-ruble coins in the right pocket.