Question

Урожай яблок составивший 200 кг переработали в сухофрукты при сушке масса яблок уменьшилась на 70 % какова масса сушеных яблок . и объясните откуда взялось сто и нам нужно % перевести в дробь первым делом

Answer 1

100% это начальная величина чего-либо. Связана с дробями. Чтобы перевести десятичную дробь в проценты надо умножить на 100. Например 0,5 от зарплаты это 0,5×100%=50%. И наоборот.
1) 200×0,7=140 (кг) на столько уменьшилась масса яблок
2) 200-140=60 (кг) масса сушеных яблок
Или
1) 100-70=30 % стала масса яблок от начальной
2) 200×0,3=60 (кг)

Answer 2

Calculation of the Weight of Dried Apples

To calculate the weight of the dried apples, we need to determine the weight loss during the drying process.

Given: - Initial weight of apples = 200 kg - Weight loss during drying = 70%

To find the weight of the dried apples, we can use the following formula:

Weight of dried apples = Initial weight of apples - Weight loss during drying

Substituting the given values into the formula:

Weight of dried apples = 200 kg - (70% of 200 kg)

To convert the percentage to a fraction, we divide it by 100:

Weight of dried apples = 200 kg - (0.7 * 200 kg)

Simplifying the equation:

Weight of dried apples = 200 kg - 140 kg

Weight of dried apples = 60 kg

Therefore, the mass of the dried apples is 60 kg.

Explanation of Percentage Calculation

To understand where the percentage comes from and why we need to convert it to a fraction, let's break it down:

When we say the weight of the apples decreased by 70%, it means that the final weight is 30% of the initial weight. In other words, the weight loss is 100% - 70% = 30%.

To calculate the weight of the dried apples, we need to subtract the weight loss from the initial weight. However, it's easier to work with fractions when dealing with percentages. So, we convert the percentage to a fraction by dividing it by 100.

In this case, 70% is equivalent to 70/100 or 0.7 as a fraction. By multiplying the initial weight by 0.7, we can find the weight loss during drying.

Converting the percentage to a fraction allows us to perform calculations more easily and accurately.

I hope this explanation clarifies the calculation and the conversion of percentages to fractions. Let me know if you have any further questions!