Question

Костя прочитал 30 страниц что составило 0,3 всей книги Сколько страниц в книге

Answer 1

Составим пропорцию
30 страниц это 0.3
х страниц это 1 книга

х=1*30:0.3=100 страниц

Ответ 100 страниц

Answer 2

30 / 3\10 = 30 * 10\3 = 300 / 3 = 100

Answer 3

Calculating the Total Number of Pages in the Book

To calculate the total number of pages in the book, we can use the information that Kostya read 30 pages, which constitutes 0.3 of the entire book. We can use this information to find the total number of pages in the book.

Let's denote the total number of pages in the book as x.

According to the given information, Kostya read 30 pages, which is 0.3 of the entire book. We can express this as an equation:

30 = 0.3x

To find the total number of pages in the book, we can solve for x using the given equation.

Solving for the Total Number of Pages

To solve for x, we can use the following equation:

30 = 0.3x

We can solve for x by dividing both sides of the equation by 0.3:

x = 30 / 0.3

Calculating the Total Number of Pages

By performing the calculation, we find:

x = 100

So, the total number of pages in the book is 100.

Therefore, the book contains 100 pages in total.

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