Question

Будильник уходит вперёд на 9 минут в сутки (происходит это равномерно). Ложась спать в 22:00, Юля установила на нём точное время. На какое время ей нужно установить сигнал будильника, чтобы проснуться ровно в 6:00?

Answer 1

в 6.00,так как там сказано ,что перед тем ,как она легла спать она поставила на нем точное времч

Answer 2

Calculation of Alarm Time

To determine the time at which Julia should set her alarm clock to wake up exactly at 6:00 AM, we need to consider the fact that the clock goes forward by 9 minutes each day.

Julia goes to bed at 22:00 (10:00 PM). We need to calculate the number of minutes between her bedtime and 6:00 AM the next day, and then subtract the accumulated 9 minutes for each day.

Let's calculate the alarm time step by step:

1. Calculate the number of minutes between Julia's bedtime (22:00) and 6:00 AM the next day: - The number of minutes between 22:00 and 6:00 AM is 8 hours and 360 minutes (22:00 to 00:00 = 120 minutes, 00:00 to 6:00 = 240 minutes). - So, the total number of minutes between Julia's bedtime and 6:00 AM is 360 minutes.

2. Subtract the accumulated 9 minutes for each day: - Since the clock goes forward by 9 minutes each day, we need to subtract the accumulated minutes for the number of days between Julia's bedtime and the desired wake-up time of 6:00 AM. - To calculate the number of days, we divide the total number of minutes (360) by 9. - The result is 40 days (360 minutes / 9 minutes per day).

3. Subtract the accumulated minutes from the total number of minutes between Julia's bedtime and 6:00 AM: - Subtracting the accumulated minutes (40 days * 9 minutes per day = 360 minutes) from the total number of minutes (360 minutes) gives us the remaining minutes until 6:00 AM. - The result is 0 minutes.

Therefore, Julia should set her alarm clock to 6:00 AM in order to wake up exactly at that time.

Please note that this calculation assumes that the clock consistently goes forward by 9 minutes each day, as mentioned in the question.