Question

ПОМОГИТЕ ПЖ ДАМ 15 БАЛЛОВ! Библиотечный фонд школы за год увеличился на 125%. Сколько книг стало в школьной библиотеке, если первоначально в ней было 640 книг ?

Answer 1

1) 100% = 640
2) 640*0.25 = 160
3) 160+640 = 800 книг
если не прокатит, можешь воспользоваться формулой: (640*25)/100=160

Answer 2

Calculation of the Increase in the School Library's Book Collection

To calculate the number of books in the school library after a 125% increase, we can use the following formula:

New number of books = Initial number of books + (Initial number of books * Increase percentage)

Given that the initial number of books in the school library was 640 and the increase percentage is 125%, we can substitute these values into the formula:

New number of books = 640 + (640 * 125%)

To calculate the increase, we need to convert the percentage to a decimal by dividing it by 100:

New number of books = 640 + (640 * 1.25)

Now we can calculate the new number of books:

New number of books = 640 + 800

New number of books = 1440

Therefore, the school library now has 1440 books after a 125% increase from the initial 640 books.