Question

17. | На полке стояло 22 волшебных книг по заклинаниям, все они были прочитаны. Из них 4 прочитал и Гарри Поттер, и Рон. Гермиона прочитала 7 книг, которых не читали ни Гарри Поттер, ни Рон, и две книги, которые читал Гарри Поттер. Всего Гарри Поттер прочитал 11 книг. Сколько книг прочитал только Рон? Срочно пожалуйста 15 баллов

Answer 1

Ответ:

оаоааопнириотнсни тотгрнпна

Пошаговое объяснение:

Олимпийских иргинмкс

Answer 2

To solve this problem, let's break down the information given:

- There were 22 magical spell books on the shelf, and all of them were read. - Harry Potter and Ron read 4 books together. - Hermione read 7 books that neither Harry Potter nor Ron read. - Hermione also read 2 books that Harry Potter read. - Harry Potter read a total of 11 books.

We need to find out how many books Ron read.

Solution:

Let's assign variables to represent the number of books read by each person: - Let's say the number of books read by Ron is R. - The number of books read by Hermione that neither Harry nor Ron read is H1. - The number of books read by Hermione that Harry also read is H2.

From the given information, we can form the following equations:

1. The total number of books read by Harry, Ron, and Hermione is 22: - Harry (H) + Ron (R) + Hermione (H1 + H2) = 22

2. Harry and Ron read 4 books together: - Harry (H) + Ron (R) = 4

3. Hermione read 7 books that neither Harry nor Ron read: - Hermione (H1) = 7

4. Hermione read 2 books that Harry also read: - Hermione (H2) = 2

5. Harry read a total of 11 books: - Harry (H) = 11

Let's solve these equations to find the value of R, which represents the number of books read by Ron.

Solution Steps:

1. Substitute equation 5 into equation 2 to eliminate Harry's variable: - 11 + Ron (R) = 4 - Ron (R) = 4 - 11 - Ron (R) = -7

2. Substitute equation 3 into equation 1 to eliminate Hermione's variable: - 7 + Ron (R) + Hermione (H2) = 22 - Ron (R) + Hermione (H2) = 22 - 7 - Ron (R) + Hermione (H2) = 15

3. Substitute the value of Ron (R) from step 1 into equation 2 to find Hermione's variable: - Harry (H) + (-7) = 4 - Harry (H) = 4 + 7 - Harry (H) = 11

4. Substitute the value of Harry (H) from step 3 into equation 5 to find Hermione's variable: - 11 = 11

5. Substitute the value of Hermione (H2) from step 4 into equation 2 to find Ron's variable: - 11 + Ron (R) = 4 - Ron (R) = 4 - 11 - Ron (R) = -7

Based on the equations, it seems that there is no valid solution for the number of books read by Ron. The given information may contain inconsistencies or errors.

Please double-check the information provided and let me know if there are any corrections or additional details.