Question

Масса зайца на 2 кг больше массы кролика.Масса 2 зайцев такая же, как 4 кроликов.Какова масса одного зайца

Answer 1

Пусть масса кролика х, то масса зайца 2+х
(2+х)×2=4х
4+2х=4х
4=4х-2х
4=2х
х=4÷2
х=2

Answer 2

Problem Analysis

We are given the information that the mass of a hare (заяц) is 2 kg more than the mass of a rabbit (кролик). Additionally, the mass of 2 hares is the same as the mass of 4 rabbits. We need to find the mass of one hare.

Solution

Let's assume the mass of a rabbit is x kg. According to the given information, the mass of a hare is 2 kg more than the mass of a rabbit, so the mass of a hare is x + 2 kg.

We are also told that the mass of 2 hares is the same as the mass of 4 rabbits. Mathematically, this can be represented as:

2 * (x + 2) = 4 * x

Simplifying the equation:

2x + 4 = 4x

Subtracting 2x from both sides:

4 = 2x

Dividing both sides by 2:

x = 2

Therefore, the mass of one rabbit is 2 kg.

To find the mass of one hare, we can substitute the value of x into the equation:

Mass of hare = x + 2 = 2 + 2 = 4 kg

The mass of one hare is 4 kg.

Answer

The mass of one hare is 4 kg.