Question

Библиотека имеет 925 читателей. Из них школьников на 125 меньше, чем взрослых .Сколько школьников является читателями библиотеки? Сколько взрослых? Помогите пожалуйста решить.

Answer 1

925-125=800(ч)-разница между взрослыми и школьниками
800:2=400(ч)-школьники
400+125=525(ч)-взрослые
Ответ:400 школьников;525 взрослых

Answer 2

Problem Analysis

We are given that a library has a total of 925 readers, and the number of schoolchildren is 125 less than the number of adults. We need to determine the number of schoolchildren and adults who are readers at the library.

Solution

Let's assume the number of schoolchildren is represented by x and the number of adults is represented by y.

From the given information, we can form the following equations: 1. The total number of readers is 925: x + y = 925. 2. The number of schoolchildren is 125 less than the number of adults: x = y - 125.

To solve this system of equations, we can substitute the value of x from equation 2 into equation 1.

Solution Steps

1. Substitute y - 125 for x in equation 1: (y - 125) + y = 925. 2. Simplify the equation: 2y - 125 = 925. 3. Add 125 to both sides of the equation: 2y = 1050. 4. Divide both sides of the equation by 2: y = 525. 5. Substitute the value of y into equation 2 to find x: x = 525 - 125 = 400.

Answer

Therefore, there are 400 schoolchildren and 525 adults who are readers at the library.

Please let me know if I can help you with anything else.