Question

Книга в переплете стоит 100руб. книга на 20 руб дороже переплета. сколько стоит переплет.

Answer 1

Calculation of the Cost of the Book Cover

To calculate the cost of the book cover, we need to determine the price difference between the book and the cover.

According to the information provided, the book costs 100 rubles and is 20 rubles more expensive than the cover.

Let's denote the cost of the cover as 'x'.

The equation can be set up as follows:

Book cost = Cover cost + Price difference

Using the given information, we can write the equation as:

100 rubles = x rubles + 20 rubles

To find the value of 'x', we can solve the equation:

x = 100 rubles - 20 rubles

Simplifying the equation, we get:

x = 80 rubles

Therefore, the cost of the book cover is 80 rubles.