Question

До обеда выгрузили 7/10 зерна,находившегося в товарном вагоне.Сколько тонн зерна было если выгрузили 42 тонны?

Answer 1

Если выгрузили 42 тонны,то это 7/10 зерна
Всего зерна-42/7*10=60(т)
ответ-60 тонн)))

Answer 2

составим пропорцию:

42 т - $\frac{7}{10}$

 х т - 1

 

$x=42:\frac{7}{10}=42\cdot\frac{10}{7}=\frac{42\cdot10}{7}=\frac{420}{7}=60$ (т)

 

Ответ: 60 тонн зерна было в вагоне.

Answer 3

Calculating the Amount of Grain

To calculate the amount of grain that was initially in the freight car, we can use the following formula:

Initial amount of grain = (Amount unloaded) / (1 - Fraction unloaded)

Given that 7/10 of the grain was unloaded and the amount unloaded was 42 tons, we can calculate the initial amount of grain using the formula:

Initial amount of grain = 42 / (1 - 7/10)

Calculation

Initial amount of grain = 42 / (1 - 0.7) = 42 / 0.3 = 140 tons

Therefore, the initial amount of grain in the freight car was 140 tons.