Question

5кг.лучного сена заменяет 7кг овсяной соломы.Сколько нужно овсяной соломы,чтоб заменить 15000кглучного сена?

Answer 1

5кг луч.сена-7кг овс сол
1500 луч.сено-х овс сол
1)1500*7=10500овс.сол
2)10500:5=2100 кглуч. сол
 

Answer 2

составим пропорцию: 5кг сена - 7 кг соломы

                                 15000 кг сена - х кг соломы

 решаем крест-накрест: 15000*7:5=21000 кг

Ответ: 21000 кг 

Answer 3

Calculating the Amount of Oat Straw Needed to Replace 15,000 kg of Alfalfa Hay

To calculate the amount of oat straw needed to replace 15,000 kg of alfalfa hay, we can use the given ratio of 5 kg of alfalfa hay being replaced by 7 kg of oat straw.

Step 1: Determine the Proportional Relationship

We know that 5 kg of alfalfa hay is replaced by 7 kg of oat straw. To find out how much oat straw is needed to replace 15,000 kg of alfalfa hay, we can set up a proportion.

Step 2: Set Up the Proportion

Let's set up the proportion using the given ratio:

5 kg of alfalfa hay is to 7 kg of oat straw as 15,000 kg of alfalfa hay is to x kg of oat straw.

This can be represented as:

5 kg / 7 kg = 15,000 kg / x

Step 3: Solve for x

Now, we can solve for x, which represents the amount of oat straw needed to replace 15,000 kg of alfalfa hay.

Cross-multiplying gives us:

5 * x = 7 * 15,000

Dividing both sides by 5 gives us:

x = (7 * 15,000) / 5

Let's calculate the value of x.

Step 4: Calculate the Amount of Oat Straw Needed

Using the given ratio, we can calculate the amount of oat straw needed to replace 15,000 kg of alfalfa hay:

x = (7 * 15,000) / 5 x = 21,000 kg

Conclusion: To replace 15,000 kg of alfalfa hay, approximately 21,000 kg of oat straw is needed.