Question

Помогите!!! Маша каждый день прочитывала 30 страниц книги.Сколько страниц ей останется прочитать через 2 недели,если всего в книге 800 страниц?Успеет ли она прочитать книгу целиком за 3 недели?За 4 недели?

Answer 1

В неделе-7 дней. В двух неделях-14 дней. Найдём количество страниц, которые Маша прочитала за 2 недели.
30*14=420 страниц.
800-420=380 страниц-осталось прочитать.
в трёх неделях 21 день.
за 3 недели Маша прочитает:
30*21=630, значит она не успеет прочитать за 3 недели
в четырёх неделях 28 дней
за четыре недели Маша прочитает:
30*28=840.
Значит Маша успеет прочитать книгу за 4 недели

Answer 2

Calculation of Remaining Pages

To calculate the number of pages Masha will have left to read after 2 weeks, we need to subtract the number of pages she has already read from the total number of pages in the book.

Masha reads 30 pages every day, so in 2 weeks (14 days), she will have read a total of 30 * 14 = 420 pages.

To find the number of pages she will have left to read, we subtract the pages she has already read from the total number of pages in the book:

800 - 420 = 380 pages.

Therefore, Masha will have 380 pages left to read after 2 weeks.

Reading the Book in 3 Weeks

Now let's determine if Masha will be able to read the entire book in 3 weeks.

In 3 weeks (21 days), Masha will have read a total of 30 * 21 = 630 pages.

To determine if she can finish the book, we compare the total number of pages she will have read (630) with the total number of pages in the book (800).

Since 630 is less than 800, Masha will not be able to finish the entire book in 3 weeks.

Reading the Book in 4 Weeks

Next, let's see if Masha will be able to read the entire book in 4 weeks.

In 4 weeks (28 days), Masha will have read a total of 30 * 28 = 840 pages.

Comparing the total number of pages she will have read (840) with the total number of pages in the book (800), we can see that she will have read more pages than the total number of pages in the book.

Therefore, Masha will be able to finish the entire book in 4 weeks.

To summarize: - After 2 weeks, Masha will have 380 pages left to read. - Masha will not be able to finish the book in 3 weeks. - Masha will be able to finish the book in 4 weeks.

Please note that these calculations assume Masha maintains a consistent reading pace of 30 pages per day.