Question

На лето в школе было задано прочитать 25 книг. Все они были прочитаны Гришей, Петром или Ритой. При этом не было ни одной книги, которую бы прочитали все. 4 книги прочитали и Петя, и Рита. Гриша прочитал 7 книг, которые не читали ни Пётр, ни Рита, и две книги, которые читал Пётр. Всего Петя прочитал 11 книг. Сколько книг прочитала только Рита (введите цифру)? *

Answer 1

14 книг было всего прочитал

Answer 2

Скорее всего девять книг

Answer 3

Task Analysis

To find out how many books only Rita read, we need to analyze the given information about the books read by Grisha, Petr, and Rita.

Given Information

- 25 books were assigned to be read during the summer. - All books were read by Grisha, Petr, or Rita. - No book was read by all three. - Petr and Rita both read 4 books. - Grisha read 7 books that neither Petr nor Rita read, and 2 books that Petr read. - Petr read a total of 11 books.

Solution

To solve this problem, we need to carefully analyze the information provided and use it to determine the number of books that only Rita read.

Solution Steps

1. Determine the total number of books read by Grisha, Petr, and Rita. 2. Use the information about Petr and Rita's common books to find the number of books read by both. 3. Use the information about Grisha's books to find the number of books read only by Grisha. 4. Use the total number of books read by Petr to find the number of books read only by Rita.

Let's proceed with the solution.