Question

при преработке в сахар сахарный тростник теряет 90% своей массы, а свекла - 85%. Сколько килограммов тростника нало взять, чтобы получить столько же сахара, сколько из 400 кг свеклы?

Answer 1

1)100%-90%=10%-составляет сахар в сахарном тростнике.

2)100%-85%=15%-составляет сахар в свекле.

 из 400кг свеклы ------------------- это 100%

     хкг сахара ----------------------это 15%

х=400*15:100= 60кг сахара получается из 400кг свеклы.

 

из х кг тростника ------------------- это 100%

   60кг сахара ------------------------это 10%

х=60*100:10= 600кг тростника нало взять.

Answer 2

400кг свеклы - 100%

?кг потеря массы - 85%

400*0,85=340(кг) - потеря массы(отходы), остальное-сахар

400-340=60(кг) - сахара из 400кг свеклы

Из тростника надо тоже получить 60кг сахара

Тростник теряет 90% своей массы

100%-90%=10% - составляют 60кг сахара

60кг - 10%

?кг тростника - 100%

60*100:10=600(кг) - тростника надо взять

Answer 3

Calculation of Sugar from Sugar Cane and Sugar Beet

To calculate the amount of sugar obtained from sugar cane and sugar beet, we need to consider the percentage of mass lost during processing.

According to the search results, sugar cane loses 90% of its mass during processing, while sugar beet loses 85% of its mass.

Let's calculate the amount of sugar obtained from 400 kg of sugar beet.

1. Calculate the mass of sugar obtained from sugar beet: - Sugar beet loses 85% of its mass during processing. - Therefore, the mass of sugar obtained from 400 kg of sugar beet is 85% of 400 kg, which is 340 kg.

2. Calculate the amount of sugar cane needed to obtain the same amount of sugar: - Sugar cane loses 90% of its mass during processing. - We need to find the mass of sugar cane that, after losing 90% of its mass, yields 340 kg of sugar. - Let's assume the mass of sugar cane needed is x kg. - The equation can be set up as follows: (100% - 90%) * x kg = 340 kg. - Simplifying the equation, we have 10% * x kg = 340 kg. - Dividing both sides of the equation by 10%, we find that x kg = 340 kg / 10%. - Therefore, the mass of sugar cane needed to obtain the same amount of sugar as 400 kg of sugar beet is 3400 kg.

So, to obtain the same amount of sugar as 400 kg of sugar beet, you would need to take approximately 3400 kg of sugar cane.

Please note that these calculations are based on the given percentages of mass lost during processing and may vary depending on the specific processing methods used in practice.