Question

За две книги заплатили 560 рублей.цена 1-ой книги 4 раза меньше втрой. склько стоит каждая книга. пмгите решить

Answer 1

560:4=140перваяя книга
560-140=420 вторая книгп

Answer 2

560/5=112 первая книга.
112*4=448 вторая книга.

Answer 3

Solution:

Let's denote the price of the first book as x and the price of the second book as y. We are given that the total cost for both books is 560 rubles and the price of the first book is 4 times less than the price of the second book.

We can set up the following system of equations to solve for the prices of the books:

1. x + y = 560 (total cost for both books is 560 rubles) 2. x = (1/4)y (the price of the first book is 4 times less than the price of the second book)

Calculation:

Substitute the value of x from the second equation into the first equation:

(1/4)y + y = 560

Simplify the equation:

(5/4)y = 560

Multiply both sides by 4/5 to solve for y:

y = 560 * (4/5)

y = 448

Now, substitute the value of y back into the second equation to solve for x:

x = (1/4) * 448

x = 112

Answer:

So, the price of the first book is 112 rubles and the price of the second book is 448 rubles.