Question

Подскажите СРОЧНО!!! В двух шкафах 384 книги.Если из одного шкафа убрать 12 книг,в шкафах книг станет поровну.Сколько книг окажется в каждом шкафу?Сколько в них было книг сначала?

Answer 1

1)384-12=372 к.- останется в двух шкафах

2)372:2=186 к.-окажется в каждом шкафу

3)186+12= 198 к - было сначала в первом шкафу

186 к. - было сначала во втором шкафу

 

Answer 2

Если из одного шкафа убрать 12 книг, то всего их станет 372. В каждом шкафу по 186. А сначала в одном было 186, а в другом 186+12=198

Answer 3

Problem Analysis

We are given that there are 384 books in two cabinets. If we remove 12 books from one cabinet, the number of books in each cabinet will be equal. We need to determine how many books will be in each cabinet and how many books were originally in the cabinets.

Solution

Let's assume that there are x books in the first cabinet and y books in the second cabinet.

According to the given information, we have the following equations:

1. x + y = 384 (equation 1) 2. x - 12 = y (equation 2)

To solve this system of equations, we can substitute equation 2 into equation 1:

x + (x - 12) = 384 2x - 12 = 384 2x = 384 + 12 2x = 396 x = 396 / 2 x = 198

Now, we can substitute the value of x back into equation 1 to find y:

198 + y = 384 y = 384 - 198 y = 186

Therefore, there will be 198 books in the first cabinet and 186 books in the second cabinet.

To find the number of books originally in the cabinets, we can add the number of books removed (12) to each cabinet:

- The first cabinet originally had 198 + 12 = 210 books. - The second cabinet originally had 186 + 12 = 198 books.

Answer

There will be 198 books in each cabinet after removing 12 books from one cabinet. The first cabinet originally had 210 books, and the second cabinet originally had 198 books.