Question

До обеда выгрузили 7/10 зерна, находившегося в товарном вагоне. Сколько тонн зерна было в вагоне,если выгрузили 42 т? Помогите! ( Если можно, можно с крате\кой записей (Всего... Выгрузили...Сколько тонн?)).

Answer 1

Сначала узнаем, чему равна 1/10-я
42:7=6.
теперь узнаём сколько всего зерна было в вагоне
6Х10=60
Ответ 60 тонн.

Answer 2

7:10 - 62 тонны;
1:10- 6 тонн
42:7/10=60(т)
Ответ: в вагоне было 60 т. зерна

Answer 3

Problem Analysis

We are given that 7/10 of the grain in a freight car was unloaded before lunch, and we need to determine the total weight of the grain in the car if 42 tons were unloaded.

Solution

Let's assume the total weight of the grain in the car is x tons. According to the problem, 7/10 of the grain was unloaded, which means 3/10 of the grain is still in the car.

We can set up the following equation to represent the given information:

(3/10) * x = 42

To find the value of x, we can solve this equation.

Calculation

To solve the equation, we can multiply both sides by 10/3 to isolate x:

x = (42) * (10/3)

Simplifying the right side of the equation:

x = 140

Answer

Therefore, the total weight of the grain in the car was 140 tons.

Please let me know if I can help you with anything else.