Question

На первой полке 12 коробок конфет. На второй на 4 коробки конфет меньше. Сколько кг. конфет на каждой полке, если на второй полке на 20 кг.меньше, чем на первой, а коробки одинаковые?

Answer 1

20 кг это 4 коробки
20:4=5
одна коробка - 5 кг
т.к. коробки одинаковые, то
на первой полке
12*5=60
первая полка 60 кг
60-20=40
вторая полка 40 кг

Answer 2

1)20:4=5(кг)-одна коробка
2)12*5=60(кг)-1 пока
3)60-20=40(кг)-2 полка

Answer 3

Problem Analysis

We are given that there are 12 boxes of candy on the first shelf and 4 fewer boxes on the second shelf. We also know that the weight of the candy on the second shelf is 20 kg less than the weight on the first shelf. We need to determine the weight of the candy on each shelf.

Solution

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

The weight of the candy on the first shelf is then 12x kg.

The weight of the candy on the second shelf is 12x - 4x = 8x kg.

We are also given that the weight of the candy on the second shelf is 20 kg less than the weight on the first shelf. So we can write the equation:

12x - 20 = 8x

Simplifying the equation, we get:

4x = 20

Dividing both sides of the equation by 4, we find:

x = 5

Therefore, each box of candy weighs 5 kg.

Substituting this value back into the equations, we find:

The weight of the candy on the first shelf is 12 * 5 = 60 kg.

The weight of the candy on the second shelf is 8 * 5 = 40 kg.

Answer

Each box of candy weighs 5 kg. The weight of the candy on the first shelf is 60 kg, and the weight of the candy on the second shelf is 40 kg.