Question

Общая масса трёх кусков гранита 156 кг . кусок серого гранита тяжелее куска красного на 18 кг а кусок красного гранита легче куска белого на 15 кг . найди массу куска красного гранита.

Answer 1

Серого-? на 18 кг тяжелее красного

красного-? на 15 кг легче белого гранита

белого- ?кг

Решение.

1)18+15=33(кг)- красного гранита

2) 156-33=123(кг)- остальные

Ответ: 123 кг гранита.

Answer 2

1)18+15=33(кг)
2)156-33=123(кг)
3)123:3=41(кг)
Ответ: масса куска красного гранита равна 41 килограммов.

Answer 3

Finding the Mass of the Red Granite Piece

To find the mass of the red granite piece, we can use the information provided about the total mass and the relative weights of the different granite pieces.

Let's denote the mass of the gray granite piece as G, the mass of the red granite piece as R, and the mass of the white granite piece as W.

Given: - The total mass of the three pieces is 156 kg. - The gray granite piece is heavier than the red piece by 18 kg. - The red granite piece is lighter than the white piece by 15 kg.

We can set up the following equations: 1. G + R + W = 156 (total mass equation) 2. G = R + 18 (gray granite is heavier than red by 18 kg) 3. W = R - 15 (red granite is lighter than white by 15 kg)

We can solve these equations to find the mass of the red granite piece.

Solving for the Mass of the Red Granite Piece

Substitute the expressions for G and W from equations 2 and 3 into the total mass equation: - (R + 18) + R + (R - 15) = 156 - 3R + 3 = 156 - 3R = 153 - R = 51

So, the mass of the red granite piece is 51 kg.

This calculation shows that the mass of the red granite piece is 51 kg.