Question

Номер 1644В библиотеке было 8000книг. Через год число их увеличилось на 2000книг. На сколько процентов увеличилось число книг в библиотеке?

Answer 1

8000 книг=100% 2000 книг=х% Х=(2000*100)/8000 Х=25%

Answer 2

8000- Х %
10000(то есть 2000+8000) - 100%
8000*100:10000= 80
100-80= 20
на 20%

Answer 3

Calculation of Percentage Increase in the Number of Books in the Library

To calculate the percentage increase in the number of books in the library, we need to determine the difference between the initial number of books and the final number of books, and then express that difference as a percentage of the initial number of books.

Given: - Initial number of books in the library: 8,000 books - Increase in the number of books after one year: 2,000 books

To calculate the percentage increase, we can use the following formula:

Percentage Increase = (Increase in Number of Books / Initial Number of Books) * 100

Substituting the given values into the formula:

Percentage Increase = (2,000 / 8,000) * 100

Calculating the percentage increase:

Percentage Increase = 0.25 * 100 = 25%

Therefore, the number of books in the library increased by 25%.