Question

Решите задачу. В книге 240 страниц. В субботу мальчик прочитал 7,5% всей книги, а в воскресенье - на 12 страниц больше. Сколько страниц ему осталось прочитать? Помогите пожалуйсто.

Answer 1

Problem Analysis

To solve this problem, we need to determine the number of pages the boy has left to read after reading 7.5% of the book on Saturday and 12 pages more on Sunday.

Solution

Let's break down the problem step by step:

1. Calculate the total number of pages in the book, which is given as 240 pages. 2. Calculate the number of pages the boy read on Saturday, which is 7.5% of the total number of pages. To do this, multiply 240 by 7.5% (or 0.075). This gives us 18 pages. 3. Calculate the number of pages the boy read on Sunday, which is 12 pages more than what he read on Saturday. Add 12 to the number of pages read on Saturday. This gives us 30 pages. 4. Calculate the total number of pages the boy has read so far by adding the number of pages read on Saturday and Sunday. This gives us 18 + 30 = 48 pages. 5. Calculate the number of pages the boy has left to read by subtracting the total number of pages he has read from the total number of pages in the book. This gives us 240 - 48 = 192 pages.

Therefore, the boy has 192 pages left to read.

I hope this helps! Let me know if you have any further questions.