Question

В пустой бочонок сначала налили 13 кг меда ,а потом еще 5кг .масса бочонка с медом стала равна 20кг .найти массу пустого бочонка .

Answer 1

1)13+5=18(кг.)-масса мёда в бочонке
2)20-18=2(кг.)
ответ:масса бочонка -2 кг.

Answer 2

13-5=8
20+8=28
ответ 28

Answer 3

Problem Analysis

We are given that a barrel initially contained 13 kg of honey, and then an additional 5 kg of honey was poured into it. The total mass of the barrel with the honey is now 20 kg. We need to find the mass of the empty barrel.

Solution

Let's assume the mass of the empty barrel is x kg.

The total mass of the barrel with the honey is the sum of the mass of the honey and the mass of the empty barrel: x + 13 kg + 5 kg = 20 kg

Simplifying the equation, we have: x + 18 kg = 20 kg

Subtracting 18 kg from both sides of the equation, we get: x = 2 kg

Therefore, the mass of the empty barrel is 2 kg.

Answer

The mass of the empty barrel is 2 kg.