Question

Яблоки, содержащие 70% воды, потеряли при сушке 60% массы. Сколько процентов воды содержат сушеные яблоки?

Answer 1

1) 70-60=10 (%) от общего содержания воды осталось
2) 100-60=40 (%) составила масса высушенных яблок от первоначальной массы
3) 10/40*100=25 (%) воды содержат сушеные яблоки

Answer 2

Calculation of Water Content in Dried Apples

To calculate the percentage of water content in dried apples, we need to consider the initial water content and the loss of mass during the drying process.

Given that the apples initially contained 70% water and lost 60% of their mass during drying, we can calculate the water content in the dried apples as follows:

1. Calculate the remaining mass of the dried apples: - The dried apples retained 40% of their original mass (100% - 60%). - Let's assume the initial mass of the apples was 100 grams. - The remaining mass of the dried apples is 40 grams (100 grams * 40%).

2. Calculate the water content in the dried apples: - Since the dried apples retained 40% of their original mass, the water content is also 40% of the initial water content. - Therefore, the dried apples contain 28% water (70% * 40%).

Please note that the calculations above are based on the assumption that the loss of mass during drying is solely due to the evaporation of water. Other factors, such as the loss of volatile compounds, may also contribute to the mass loss during the drying process.