Question

В одной банке содержится 25 литров раствора соли, во второй 20 литров раствора соли, причем количество соли в первой и второй банке одинаково. Количество воды во второй банке составляет 80 процентов от общего количества раствора в этой банке. Сколько процентов воды будет в первой банке? В ответе укажите целое число без знака процента.

Answer 1

По второму  условию во  второй  банке  20% раствор, тогда  из первого условия  находим 25х=20*20   х=400\25=16 (%)  Тогда  в  первом  растворе  будет  100-16=84% воды
84

Answer 2

Calculation of Water Percentage in the First Bank

To calculate the percentage of water in the first bank, we need to consider the information provided. Let's break down the problem step by step:

1. The first bank contains 25 liters of salt solution. 2. The second bank contains 20 liters of salt solution. 3. The amount of salt in both banks is the same. 4. The second bank's water content is 80% of the total solution in that bank.

To find the percentage of water in the first bank, we need to determine the water content in the second bank and then use that information to calculate the water content in the first bank.

Calculation Steps:

1. Calculate the water content in the second bank: - The second bank contains 20 liters of salt solution. - The water content in the second bank is 80% of the total solution in that bank. - Therefore, the water content in the second bank is 20 liters * 0.8 = 16 liters.

2. Calculate the total solution in the second bank: - The second bank contains 20 liters of salt solution. - The water content in the second bank is 16 liters. - Therefore, the total solution in the second bank is 20 liters + 16 liters = 36 liters.

3. Calculate the total solution in the first bank: - The first bank contains 25 liters of salt solution. - The total solution in the first bank is also 36 liters, as the amount of salt in both banks is the same.

4. Calculate the water content in the first bank: - The total solution in the first bank is 36 liters. - The water content in the second bank is 16 liters. - Therefore, the water content in the first bank is also 16 liters.

5. Calculate the percentage of water in the first bank: - The water content in the first bank is 16 liters. - The total solution in the first bank is 36 liters. - To calculate the percentage, divide the water content by the total solution and multiply by 100: - (16 liters / 36 liters) * 100 = 44.44%

Therefore, the percentage of water in the first bank is approximately 44%.

Please note that the answer is rounded to the nearest whole number without the percentage sign, as requested in the question.