Question

Температура воздуха снизилась за первый день на 10 процентов,а за второй - на 15 На сколько процентов снизилась температура за два дня?

Answer 1

100-10%=90
90-15%=76,5
ответ: 23.5

Answer 2

Calculation of Temperature Decrease

To calculate the percentage decrease in temperature over two days, we need to find the difference between the initial temperature and the final temperature, and then calculate the percentage decrease based on the initial temperature.

Let's assume the initial temperature is T0 and the temperature decreases by 10% on the first day and by 15% on the second day.

The temperature after the first day can be calculated as T1 = T0 - (0.1 * T0) = 0.9 * T0.

The temperature after the second day can be calculated as T2 = T1 - (0.15 * T1) = 0.85 * T1 = 0.85 * 0.9 * T0.

To find the percentage decrease, we can calculate the difference between the initial temperature and the final temperature, and then divide it by the initial temperature:

Percentage decrease = ((T0 - T2) / T0) * 100.

Let's calculate the percentage decrease using an example:

Assuming the initial temperature is 100 degrees:

T1 = 0.9 * 100 = 90 degrees.

T2 = 0.85 * 90 = 76.5 degrees.

Percentage decrease = ((100 - 76.5) / 100) * 100 = 23.5%.

Therefore, the temperature decreased by 23.5% over the two days.