Question

Помогите мне с задаче Школьники трёх классов помогали в уборке картофеля. Один класс собрал 230 кг картофеля , другой - на 20 кг больше, чем первый, но оба класса собрали вместе на 40 кг меньше, чем третий класс. Сколько килограммов картофеля было собрано тремя классами?

Answer 1

1)230+20=250 (кг)- второй класс
2)230+250=480 (кг)-первый класс + второй класс
3)480+40=520 (кг)-третий класс
4)480+520=1000 (кг)(1тонна)-вместе
ответ : вместе все собрали 1 тонну картофеля

Answer 2

Problem Analysis

The problem involves three classes helping in potato harvesting. The first class harvested 230 kg of potatoes, the second class harvested 20 kg more than the first, and together they harvested 40 kg less than the third class. We need to find the total amount of potatoes harvested by all three classes.

Solution

Let's denote: - The amount of potatoes harvested by the first class as x kg. - The amount of potatoes harvested by the second class as (x + 20) kg. - The amount of potatoes harvested by the third class as (x + 40 + 230) kg.

We can then form the equation: x + (x + 20) + (x + 40 + 230) = Total amount of potatoes harvested by all three classes

Calculation

Let's solve for x to find the amount of potatoes harvested by the first class.

x + (x + 20) + (x + 40 + 230) = Total amount of potatoes harvested by all three classes

3x + 60 + 230 = Total amount of potatoes harvested by all three classes

3x + 290 = Total amount of potatoes harvested by all three classes

Now, we can solve for x: 3x = Total amount of potatoes harvested by all three classes - 290

x = (Total amount of potatoes harvested by all three classes - 290) / 3

Let's substitute the value of x to find the total amount of potatoes harvested by all three classes.

Final Answer

The total amount of potatoes harvested by all three classes can be calculated using the formula: Total amount of potatoes harvested by all three classes = 3x + 290

Let's calculate the value of x and then find the total amount of potatoes harvested by all three classes.