Question

Из 21 кг подсолнечного получили 5,1 кг масла сколько масла получится из 7 кг подсолнечника

Answer 1

1 способ:

1) 21 : 7 = 3 раза меньше получится
2) 5,1 : 3 = 1,7 кг масла получится из 7 кг

2 способ пропорция:

21/5,1 = 7/х
21х = 5,1 * 7
21х = 35,7
х = 35,7 : 21
х = 1,7 кг

Answer 2

To calculate how much oil will be obtained from 7 kg of sunflower seeds, we need to find the ratio of oil obtained to the weight of sunflower seeds.

Given that 21 kg of sunflower seeds produced 5.1 kg of oil, we can set up a proportion:

(Weight of oil obtained) / (Weight of sunflower seeds) = (5.1 kg) / (21 kg)

Now, we can use this proportion to find how much oil will be obtained from 7 kg of sunflower seeds:

(Weight of oil obtained from 7 kg) = (7 kg) * (5.1 kg) / (21 kg) ≈ 1.7 kg

So, approximately 1.7 kg of oil will be obtained from 7 kg of sunflower seeds.