Question

Имеется творог двух сортов.:жирный содержит 20 %.жира ,а нежирный содержит 5% жира .Определите процент жирности полученного творога,если смешали: 2 кг жирного и 3 кг нежирного творога помогите плиз, дам 40 пнк

Answer 1

Смешали 2 кг + 3 кг = 5 кг получилось)))
в 2 кг жирного содержится жира:
2 ----- 100%
ж ----- 20%
ж(кг) = 2*20/100 = 0.4 кг
в 3 кг нежирного содержится жира:
3 ----- 100%
ж -----  5%
ж(кг) = 3*5/100 = 0.15 кг
всего в смеси будет 0.4 кг + 0.15 кг = 0.55 кг жира
5 кг   ----- 100%
0.55 кг ----- х%
х(%) = 0.55*100/5 = 55/5 = 11% ---жирность получившейся смеси)))

Answer 2

Calculating the Percentage of Fat in the Mixture

To determine the percentage of fat in the resulting cottage cheese mixture, we can use the following approach:

1. Calculate the total fat content in the mixture by adding the fat content of the two types of cottage cheese. 2. Calculate the total weight of the mixture. 3. Divide the total fat content by the total weight of the mixture and multiply by 100 to get the percentage.

Let's proceed with the calculations.

Calculation Steps

1. Calculate the Total Fat Content in the Mixture: - The fat content of the fatty cottage cheese is 20%. - The fat content of the low-fat cottage cheese is 5%. - We have 2 kg of fatty cottage cheese and 3 kg of low-fat cottage cheese.

The total fat content in the mixture can be calculated as follows: - Total fat from fatty cottage cheese = 20% of 2 kg - Total fat from low-fat cottage cheese = 5% of 3 kg

The total fat content in the mixture is the sum of these two values.

Calculation: - Total fat from fatty cottage cheese = 20% of 2 kg = 0.4 kg - Total fat from low-fat cottage cheese = 5% of 3 kg = 0.15 kg - Total fat content in the mixture = 0.4 kg + 0.15 kg = 0.55 kg

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2. Calculate the Total Weight of the Mixture: - We have 2 kg of fatty cottage cheese and 3 kg of low-fat cottage cheese.

The total weight of the mixture is the sum of these two values.

Calculation: - Total weight of the mixture = 2 kg + 3 kg = 5 kg

3. Determine the Percentage of Fat in the Mixture: - Divide the total fat content by the total weight of the mixture and multiply by 100 to get the percentage.

Calculation: - Percentage of fat in the mixture = (Total fat content / Total weight of the mixture) * 100 - Percentage of fat in the mixture = (0.55 kg / 5 kg) * 100 - Percentage of fat in the mixture ≈ 11%

Conclusion

The resulting cottage cheese mixture has a fat content of approximately 11%.

I hope this helps! If you have further questions or need additional assistance, feel free to ask.