Question

Книга без переплета стоит 7 рублей 20 копеек переплет дешевле книги на 2 руб 80 коп сколько стоит готовая книга

Answer 1

7.20 -2.80=4.40(руб)
4.40 + 7.20=11.6 (руб)
ответ 11.6

Answer 2

Calculating the Cost of the Book

To calculate the cost of the book with a cheaper cover, we can follow these steps:

1. Cost of the Book without Cover: - The book without a cover costs 7 rubles 20 kopecks.

2. Cost of the Cheaper Cover: - The cheaper cover costs 2 rubles 80 kopecks less than the book.

3. Total Cost of the Book with Cheaper Cover: - To find the total cost of the book with the cheaper cover, we need to subtract the cost of the cheaper cover from the cost of the book without cover.

Calculation

The total cost of the book with the cheaper cover can be calculated as follows:

1. Cost of the book without cover: 7 rubles 20 kopecks. 2. Cost of the cheaper cover: 2 rubles 80 kopecks less than the book.

Therefore, the total cost of the book with the cheaper cover is 7 rubles 20 kopecks - 2 rubles 80 kopecks = 4 rubles 40 kopecks.

So, the total cost of the book with the cheaper cover is 4 rubles 40 kopecks.