Question

Для ремонта школы привезли 900 штук белых и красных кирпичей, одинаковых по массе. Масса всех красных кирпичей 1900 кг, а масса белых 1700 кг. Найди количество красных и белых кирпичей в отдельности! ПОМОГИТЕ

Answer 1

1900+1700=3600
900/3600=0.25
0.25*1900=475 шт красных
0.25*1700=425 шт белых

Answer 2

1900+1700=3600 маса всех кирпичей
3600 / 900 = 4 кг - маса 1 кирпича
1900 / 4 = 475 шт - красн. кирп.
1700 / 4 = 425 шт - бел. кирп

Answer 3

Finding the Number of Red and White Bricks

To find the number of red and white bricks, we can use the given information about the total number of bricks and their respective masses.

Let's denote: - R as the number of red bricks - W as the number of white bricks

Given: - Total number of bricks: 900 - Mass of all red bricks: 1900 kg - Mass of all white bricks: 1700 kg

We can set up the following system of equations based on the given information: 1. R + W = 900 (Total number of bricks) 2. 1900R + 1700W = Total mass of all bricks

We can solve this system of equations to find the values of R and W.

Solution:

Using the system of equations, we can solve for R and W: 1. R + W = 900 2. 1900R + 1700W = Total mass of all bricks

Solving the system of equations: 1. R = 900 - W (from equation 1) 2. 1900(900 - W) + 1700W = Total mass of all bricks - 1710000 - 1900W + 1700W = Total mass of all bricks - 1710000 - 200W = Total mass of all bricks - -200W = Total mass of all bricks - 1710000 - W = (1710000 - Total mass of all bricks) / 200

We can then substitute the value of W back into the equation R = 900 - W to find the value of R.

Let's calculate the values of R and W using the given information.