Question

Помогите решить В библиотеке 2 стилажа с книгами.Первый имеет 7 полок и на каждой по 40 книг ,а второй имеет 8 полок по 15 книг на каждой.Сколько всего книг в библиотеке?

Answer 1

7*40=280(на первой полке)

8*15=120(на второй полке)

280+120=400 (всего книг в библиотеке)

Ответ: 400 книг

Answer 2

1)7*40=280
2)8*15=120
3)280+120=400
4)400*2=800

Answer 3

Calculation of the Total Number of Books in the Library

To calculate the total number of books in the library, we need to add up the number of books on each shelf in both bookshelves.

The first bookshelf has 7 shelves, with 40 books on each shelf. Therefore, the total number of books on the first bookshelf is 7 shelves x 40 books = 280 books.

The second bookshelf has 8 shelves, with 15 books on each shelf. Therefore, the total number of books on the second bookshelf is 8 shelves x 15 books = 120 books.

To find the total number of books in the library, we add the number of books on both bookshelves:

280 books (first bookshelf) + 120 books (second bookshelf) = 400 books.

Therefore, there are a total of 400 books in the library.