Question

Процентное содержание соли в растворе сначала снизилось на 20%, а затем повысилось на 20%. Насколько процентов изменилось первоначальное содержание соли?

Answer 1

Так же и останется. Че тут думать то.

Answer 2

Несколько не привыселось не поднелось также осталось 
Например: 100%+20%=120%
                 120%-20%=100

Answer 3

Calculating Change in Salt Content in Solution

To calculate the change in the percentage of salt content in the solution after it first decreased by 20% and then increased by 20%, we can use the following steps:

1. Initial Salt Content: Let's assume the initial salt content in the solution is represented by the variable 'S'.

2. Decrease by 20%: The salt content initially decreased by 20%, which means the salt content became (100% - 20%) = 80% of the original amount.

3. Increase by 20%: After the initial decrease, the salt content then increased by 20%. This means the salt content became (80% + (20% of 80%)) = 80% + 16% = 96% of the original amount.

4. Change in Salt Content: To find the change in the percentage of the initial salt content, we can calculate the difference between the initial and final percentages.

Calculation

- Initial salt content: S - After 20% decrease: 80% of S - After 20% increase: 96% of S

The change in the percentage of the initial salt content is 16%.

This calculation is based on the understanding that a 20% decrease followed by a 20% increase does not result in a net change of 0%. The net change is calculated based on the compounded effect of the decrease and increase.