Question

Помогите плиз В пустой ящик в первый раз положили 5 кг гвоздей. Во второй на 2 кг больше чем в первый раз.После этого масса ящика вместе с гвоздями стала равна 15 кг.Чему равна масса пустого ящика?Напешите кратко

Answer 1

15-(5+5+2)=3 кг масса пустого ящика

Answer 2

Масса пустого ящика равна 3 кг

Answer 3

Problem Analysis

We are given two boxes, one empty and the other containing 5 kg of nails. The second box has 2 kg more nails than the first box. The combined weight of the second box and the nails is 15 kg. We need to determine the weight of the empty box.

Solution

Let's assume the weight of the empty box is x kg.

According to the given information, the weight of the first box is 5 kg and the weight of the second box is x + 2 kg.

The combined weight of the second box and the nails is 15 kg. Therefore, we can write the equation:

x + 2 + 5 = 15

Simplifying the equation:

x + 7 = 15

Subtracting 7 from both sides:

x = 8

Therefore, the weight of the empty box is 8 kg.

Answer

The weight of the empty box is 8 kg.