Question

Лена, Катя и Таня решили купить новогодние открытки и разделить их поровну. Лена купила 8 открыток по одной цене,Катя купила 7 открыток по той же цене, а Таня внесла 25 рублей. Как Лене и Кате разделить между собой эти деньги.

Answer 1

7+8=15 откр - всего купили
15:3=5 откр - каждой девочке
25:5=5 р - стоит 1 открытка
7-5=2 откр - Катя отдала Тане
2*5=10 р- Таня отдала Кате
8-5=3 откр - Лена отдала Тане
3*5=15 р - Таня отдала Лене

Answer 2

Problem Analysis

Lena, Katya, and Tanya decided to buy New Year's cards and divide them equally among themselves. Lena bought 8 cards at the same price, Katya bought 7 cards at the same price, and Tanya contributed 25 rubles. The task is to determine how Lena and Katya should divide the money between themselves.

Solution

To find out how Lena and Katya should divide the money, we need to calculate the total cost of the cards and then divide it by 2 (since there are two people involved).

Let's calculate the total cost of the cards first. Since Lena bought 8 cards at the same price and Katya bought 7 cards at the same price, we can assume that the price of each card is the same for both of them.

The total cost of the cards can be calculated by multiplying the price of each card by the number of cards bought by Lena or Katya.

Let's assume the price of each card is 'x'.

The total cost of the cards bought by Lena is 8x, and the total cost of the cards bought by Katya is 7x.

Since Tanya contributed 25 rubles, we can set up the following equation:

8x + 7x + 25 = total cost of the cards

Simplifying the equation:

15x + 25 = total cost of the cards

Now, to find out how much money Lena and Katya should divide between themselves, we need to divide the total cost of the cards by 2:

(total cost of the cards) / 2 = (15x + 25) / 2

Let's calculate the value of 'x' and then find the amount of money that Lena and Katya should divide between themselves.

Calculation

To calculate the value of 'x', we need more information. Unfortunately, the provided search results do not contain the necessary information to solve the problem. Therefore, we cannot provide a specific answer to the question.

However, we can provide a general approach to solving the problem. If we know the value of 'x', we can calculate the total cost of the cards and then divide it by 2 to find the amount of money that Lena and Katya should divide between themselves.

Conclusion

In conclusion, to determine how Lena and Katya should divide the money between themselves, we need to know the price of each card. Unfortunately, the provided information is not sufficient to provide a specific answer.