Question

В школьную библиотеку привезли новые книги учебники составили 60% всех привезённых книг художественной литературы 25% остальные 15 книг словари Сколько всего книг привезли . На сколько учебников было больше чем словарей

Answer 1

60+25=85%  - учебники + худ литература
100-85=15%- остальные словари ,то есть 15 книг по условию
15:15%=1( книга) -это1 %
60*1=60 книг -учебники
25*1=25 книг-худ литература
60+25+15=100 книг -всего привезли
60-15=45 книг больше учебников, чем словарей
можно коротким способом
для тех,кому не страшно подумать
60+25=85%
100-85=15% -15 книг
100%-100 книг
60-15=45 книг- на столько учебников больше
можно пропорцией
60+25=85%
15%-15 книг
100%-?
х=(15*100):15=100 книг всего
100%-100 книг
60%-?
х=(60*100):100=60 учебников
60-15=45 -на столько больше учебников 

Answer 2

Calculation of Total Number of Books

To calculate the total number of books brought to the school library, we need to determine the number of books in each category and then sum them up.

Given the information provided, we know that: - 60% of the books brought are fiction books. - 25% of the books brought are textbooks. - The remaining 15 books are dictionaries.

Let's calculate the total number of books:

1. Calculate the number of fiction books: - 60% of the total books = 60/100 * Total books - Let's represent the total number of books as 'x'. - Number of fiction books = 60/100 * x = 0.6x

2. Calculate the number of textbooks: - 25% of the total books = 25/100 * Total books - Number of textbooks = 25/100 * x = 0.25x

3. Calculate the number of dictionaries: - Number of dictionaries = 15

To find the total number of books, we sum up the number of fiction books, textbooks, and dictionaries:

Total number of books = Number of fiction books + Number of textbooks + Number of dictionaries

Let's calculate the total number of books and the difference between the number of textbooks and dictionaries:

Total number of books = 0.6x + 0.25x + 15

Difference between textbooks and dictionaries = Number of textbooks - Number of dictionaries = 0.25x - 15

Now, let's solve for the values:

Total number of books = 0.6x + 0.25x + 15

Difference between textbooks and dictionaries = 0.25x - 15

To find the values of 'x' and the difference, we need more information or equations. Unfortunately, the given information is not sufficient to calculate the exact values.