Question

После того как в библиотеку расставили на полки 28 книг , осталось расставить в 2 раза меньше книг, чем расставили. Сколько всего книг надо было расставить на полки? Запиши решение задачи, кратко поесняя каждое действие

Answer 1

1) 28 / 2 = 14 (кн.) - осталось расставить.
2) 28+14 = 42 (кн.) - всего было.
Ответ : 42 книги.

Answer 2

1)28%2=14
2)28+14=42( книге)
Ответ: 42 книге всего

Answer 3

Task Solution:

To solve this problem, we can follow these steps:

1. Determine the Total Number of Books Initially: - We are given that after placing 28 books on the shelves, there were 2 times fewer books left to place. - Let's denote the total number of books initially as x.

2. Calculate the Number of Books Left to Place: - Since there were 2 times fewer books left to place than the ones already placed, we can calculate the number of books left as x/2.

3. Find the Total Number of Books: - The total number of books can be calculated by adding the books already placed to the books left to place, which is x + x/2.

4. Solve for x: - We can solve the equation x + x/2 = 28 to find the value of x.

5. Calculate the Total Number of Books: - Once we have the value of x, we can calculate the total number of books using the formula x + x/2.

Calculation:

1. We can solve the equation x + x/2 = 28 to find the value of x. - x + x/2 = 28 - 2x + x = 56 - 3x = 56 - x = 56 / 3 - x ≈ 18.67

2. The total number of books initially was approximately 18.67.

Final Answer:

The total number of books that needed to be placed on the shelves was approximately 18.67.