Question

Мальчик поймал три рыбы общей массой 3кг150г.две рыбы были одинаковые по массе.а третья составляла половину каждой из них.найти массу каждой рыбы.

Answer 1

Пусть масса 3-ей рыбы = х (кг)
тогда масса 1-ой и 2-ой рыбы будет по 2х (кг)
По условию задачи составим уравнение:
2х + 2х + х = 3150
5х = 3150
х = 630
2х = 1260
Ответ: 630 г - масса 3-ей рыбы, по 1кг 260г - масса 1-ой и 2-ой рыбы.

Answer 2

Solution:

To find the mass of each fish, we can set up a system of equations based on the given information.

Let's assume the mass of the identical fish is x and the mass of the third fish is y.

We know that: 1. The total mass of the three fish is 3 kg 150 g, which is equivalent to 3150 g. 2. Two fish have the same mass, and the third fish's mass is half of each of the identical fish's mass.

We can express this information in the following equations:

1. x + x + y = 3150 (total mass equation) 2. y = 0.5x (relationship between the third fish's mass and the identical fish's mass)

Now, we can solve these equations to find the values of x and y.

Solving the Equations:

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

x + x + 0.5x = 3150 2.5x = 3150 x = 3150 / 2.5 x = 1260

Now that we have the value of x, we can find the value of y using the relationship y = 0.5x:

y = 0.5 * 1260 y = 630

Answer:

The mass of each identical fish is 1260 grams, and the mass of the third fish is 630 grams.