Question

1)Найди два способа решения задачи. Миша читает книгу в которой 140 страниц и прочитал 5/7 всей книги . Сколько страниц ему осталось прочитать

Answer 1

Осталось прочитать 40 страниц.
1)140:7=20
2)20*5=100
3)140-100=40
Щас напишу второй способ.

Answer 2

Two Ways to Solve the Problem

There are two ways to solve the problem of determining how many pages Misha has left to read in a book that has 140 pages and he has already read 5/7 of it.

Method 1: Using Proportions

One way to solve this problem is by setting up a proportion. We can set up the proportion as follows:

(5/7) / x = 140 / 1

Where `x` represents the number of pages Misha has left to read.

To solve for `x`, we can cross-multiply and then solve for `x`:

(5/7) * 1 = 140 * x
5/7 = 140 * x
x = (5/7) / 140
x = (5/7) * (1/140)
x = 5/980
x = 1/196

Therefore, Misha has 1/196 of the book left to read.

Method 2: Using Subtraction

Another way to solve this problem is by subtracting the number of pages Misha has already read from the total number of pages in the book.

Misha has already read 5/7 of the book, which is equal to `(5/7) * 140 = 100` pages.

To find out how many pages he has left to read, we can subtract the number of pages he has already read from the total number of pages in the book:

140 - 100 = 40

Therefore, Misha has 40 pages left to read.

Both methods yield the same result, so Misha has either 1/196 or 40 pages left to read, depending on the method used.

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