Question

688 ученик прочитал 1/8 книги а затем 2/7 оставшиеся части после этого он заметил что прочитал на 18 стр меньше чем ему осталось прочитать. Сколько страниц в книге?​

Answer 1

Ответ:

привет ответ-47страниц в книжке

Answer 2

Solution:

Let's solve the problem step by step.

1. Let's assume the total number of pages in the book is x.

2. The student read 1/8 of the book, which is (1/8)x pages.

3. Then, the student read 2/7 of the remaining parts, which is (2/7)(7/8)x = (1/4)x pages.

4. The student noticed that he read 18 pages less than what he had left to read.

5. So, the equation we can form is: (1/8)x + (1/4)x = x - 18

6. We can solve this equation to find the value of x.

Calculation:

Let's solve the equation: (1/8)x + (1/4)x = x - 18

Multiply all terms by 8 to clear the fractions: x + 2x = 8x - 144

Combine like terms: 3x = 8x - 144

Subtract 8x from both sides: -5x = -144

Divide by -5: x = 28.8

Answer:

The book has 28.8 pages.

However, it's not possible for a book to have a fraction of a page, so the answer should be rounded to the nearest whole number.

So, the book has 29 pages.