Question

Первый урок у Маши начался 8 часов 30 минут . В этот день у неё было 4 урока по 40 минут ,а после уроков она задержалась на 10 минут . Каждая перемена длилась 15 минут .В какое время Маша вышла из школы . Решение и ответ

Answer 1

1)4*40=160(минут)-время потраченное на уроки
было 4 урока значит было 3 перемены
2)15*3=45(минут) заняли все перемены
3)160+45+10=215(минут)=3часа 35 минут- провела Маша в школе
4)8 часов 30 минут+3 часа 35 минут=12 часов 5 минут - во столько вышла Маша из школы

Answer 2

Problem Analysis

To determine the time at which Masha left school, we need to calculate the total duration of her lessons and breaks and add it to the starting time of her first lesson. We also need to account for the 10-minute delay after her lessons.

Solution

1. Masha's first lesson started at 8:30 AM. 2. She had 4 lessons, each lasting 40 minutes, so the total duration of her lessons is 4 * 40 = 160 minutes. 3. She had 3 breaks between her lessons, each lasting 15 minutes, so the total duration of her breaks is 3 * 15 = 45 minutes. 4. After her lessons, she was delayed for 10 minutes. 5. To calculate the time at which Masha left school, we add the total duration of her lessons, breaks, and delay to the starting time of her first lesson. 6. Convert the total duration to hours and minutes and add it to the starting time.

Calculation

Starting time of the first lesson: 8:30 AM Total duration of lessons: 160 minutes Total duration of breaks: 45 minutes Delay after lessons: 10 minutes

Total duration of lessons, breaks, and delay: 160 + 45 + 10 = 215 minutes

Adding the total duration to the starting time of the first lesson: 8:30 AM + 215 minutes = 11:05 AM

Answer

Masha left school at 11:05 AM.

Note: The answer is based on the given information and assumes that there were no additional delays or changes in the schedule.