Question

Книга в переплете стоит 1,7 р.Стоимость переплета составляет 2/15 стоимости книги.Сколько стоит книга без переплета? 2/15 дробь Решите!!!!ПОЖАЛУЙСТА!!!срочно

Answer 1

Стоимость книги в переплете      17/10 р  (1.7 р)
Стоимость книги                          х
Стоимость переплета                   2/15х
Стоимость книги в переплете= стоимость книги+ стоимость переплета
Составим уравнение:
х+2/15х= 17/10
17/15х = 17/10
х = 17/10 :  17/15
х = 17/10 * 15/17
х = 3/2 = 1,5 р.
Ответ: 1.5 р.

Answer 2

Calculating the Cost of the Book Without the Binding

To calculate the cost of the book without the binding, we can use the given information that the cost of the binding is 2/15 of the cost of the book in the binding.

Let's denote the cost of the book as B and the cost of the binding as C.

Given: - The book in the binding costs 1.7 rubles. - The cost of the binding is 2/15 of the cost of the book in the binding.

We can set up the following equation: C = (2/15)B

We are also given that the total cost of the book in the binding is 1.7 rubles: B + C = 1.7

Solving for the Cost of the Book Without the Binding

Let's solve the system of equations to find the cost of the book without the binding.

Substitute the value of C from the first equation into the second equation: B + (2/15)B = 1.7

Combine like terms: (17/15)B = 1.7

Now, solve for B: B = 1.7 * (15/17)

B = 1.5 rubles

So, the cost of the book without the binding is 1.5 rubles.

Therefore, the book without the binding costs 1.5 rubles.