Question

Настя читала интересную книгу.В первые 4 дня она читала по 15 страниц в день,а в остальные-по 25.За сколько дней она прочитала всю книгу,если в книге 135 страниц?

Answer 1

Берём и умножаем 4 на 15. Так мы узнаем сколько страниц она прочла за 4 дня. У нас получилось 60 страниц. Осталось прочесть 135-60= 75 страниц. Делим это число на 25, т.к. она стала читать по 25 страниц в день. И у нас получилось: 75:25=3. Суммируем дни. 3+4=7. Всего 7 дней.

Answer 2

Calculation of the Number of Days to Read the Book

To calculate the number of days it took Nastya to read the entire book, we need to consider her reading pace for the first 4 days and the remaining days.

Nastya read 15 pages per day for the first 4 days and 25 pages per day for the rest of the days. The book has a total of 135 pages.

Let's calculate the number of days it took Nastya to read the entire book.

Number of pages read in the first 4 days: 15 pages/day * 4 days = 60 pages

Number of pages read in the remaining days: (Total number of pages - Number of pages read in the first 4 days) = 135 pages - 60 pages = 75 pages

Number of days to read the remaining pages: 75 pages / 25 pages/day = 3 days

Therefore, it took Nastya a total of 4 days (first 4 days) + 3 days (remaining days) = 7 days to read the entire book.

Please let me know if there's anything else I can help you with!