Question

В библиотеку привезли 210 новых книг составляет 40% в необходимых книг Сколько новых книг нужны библиотеки

Answer 1

210-40%
x-100%
x=(210*100):40=525 книг

Answer 2

210х100/40=5250(книг)
Ответ:5250 книг

Answer 3

Calculating the Number of New Books Needed in the Library

To calculate the number of new books needed in the library, we can use the following steps:

1. Determine the Total Number of Required Books: - Let's assume the total number of required books is represented by the variable T.

2. Calculate the Number of New Books Needed: - We know that 210 new books constitute 40% of the total required books. We can use this information to calculate the total number of required books and then determine the number of new books needed.

3. Use the Percentage Formula: - We can use the percentage formula to find the total number of required books and then calculate the number of new books needed.

Calculation

Let's proceed with the calculation:

1. Determine the Total Number of Required Books (T): - We can use the formula: - Total Required Books = (100 / Percentage) * Number of New Books - Total Required Books = (100 / 40) * 210 - Total Required Books = 525

2. Calculate the Number of New Books Needed: - Number of New Books Needed = Total Required Books - Number of New Books - Number of New Books Needed = 525 - 210 - Number of New Books Needed = 315

Answer

The library needs 315 new books to meet the required number of books.