Question

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

Answer 1

2 недели=14 дней
14*30=420 страниц
3 недели=21 дней
21*30=630 страниц
4 недели=28 дней
28*30=840 страниц
27 дней нужен

Answer 2

287=14 дней    14*30=420 страниц прочитает через 2 недели   800-420=380 не успеет  380 страниц останется прочитать   3*7=21 дней   30*21=630 страниц за 3 недели тоже не успеет прочитать    4*7=28 дней  30*28=840 страниц    за 4 недели успеет 

Answer 3

Calculation of Remaining Pages to Read

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

Masha reads 30 pages every day, and the book has a total of 800 pages. Therefore, the number of pages she will have left to read after 2 weeks can be calculated as follows:

Number of pages Masha reads in 2 weeks = 30 pages/day * 14 days = 420 pages

Number of pages Masha will have left to read after 2 weeks = Total number of pages in the book - Number of pages Masha reads in 2 weeks = 800 pages - 420 pages = 380 pages

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

Can Masha Finish Reading the Book in 3 Weeks?

To determine if Masha can finish reading the book in 3 weeks, we need to compare the number of pages she reads in 3 weeks to the total number of pages in the book.

Number of pages Masha reads in 3 weeks = 30 pages/day * 21 days = 630 pages

If Masha reads 630 pages in 3 weeks, she will still have:

Number of pages Masha will have left to read after 3 weeks = Total number of pages in the book - Number of pages Masha reads in 3 weeks = 800 pages - 630 pages = 170 pages

Therefore, Masha will have 170 pages left to read after 3 weeks.

Can Masha Finish Reading the Book in 4 Weeks?

To determine if Masha can finish reading the book in 4 weeks, we need to compare the number of pages she reads in 4 weeks to the total number of pages in the book.

Number of pages Masha reads in 4 weeks = 30 pages/day * 28 days = 840 pages

If Masha reads 840 pages in 4 weeks, she will still have:

Number of pages Masha will have left to read after 4 weeks = Total number of pages in the book - Number of pages Masha reads in 4 weeks = 800 pages - 840 pages = -40 pages

Since the result is negative (-40 pages), it means that Masha will have finished reading the book before the end of the 4th week. Therefore, she will have finished reading the book within 4 weeks.

In summary: - After 2 weeks, Masha will have 380 pages left to read. - After 3 weeks, Masha will have 170 pages left to read. - Masha will finish reading the book within 4 weeks.

Please note that the calculations assume Masha reads the same number of pages every day without any breaks or interruptions.