Question

Самолет вылетел из Москвы в час ночи 15 декабря по московскому времени и прибыл в город N в семь утра того же дня по местному времени. В полдень 15 декабря по N-скому времени он вылетел в город p и прибыл туда в 13.00 того же дня по p-скому времени. Через два часа он вылетел в Москву и вернулся туда в 18.00 15 декабря по московскому времени. Сколько времени самолет находился в воздухе? Ответ обязательно должен быть обоснован.

Answer 1

Самолёт находился на земле с 7:00 до 12:00 по N-скому времени (5 часов) и 2 часа в городе P. Всего 5+2 = 7 часов.
Из Москвы он вылетел в 1:00, вернулся в 18:00. Отсутствовал 18-1 = 17 часов. Из них 7 провёл на земле. Значит в воздухе был 17-7 = 10 часов.

Answer 2

Calculation of the Total Time the Plane Spent in the Air

To calculate the total time the plane spent in the air, we need to consider the different legs of its journey and the time it took for each leg.

1. The plane departed from Moscow at 1:00 AM on December 15th, according to Moscow time. 2. It arrived in city N at 7:00 AM on the same day, according to the local time of city N. 3. At noon on December 15th, according to the local time of city N, the plane departed for city P. 4. The plane arrived in city P at 1:00 PM on the same day, according to the local time of city P. 5. Two hours later, at 3:00 PM, the plane departed from city P and returned to Moscow. 6. The plane arrived back in Moscow at 6:00 PM on December 15th, according to Moscow time.

To calculate the total time the plane spent in the air, we need to consider the time differences between the departure and arrival times for each leg of the journey.

1. The flight from Moscow to city N took 6 hours (from 1:00 AM to 7:00 AM). 2. The flight from city N to city P took 2 hours (from 12:00 PM to 1:00 PM). 3. The flight from city P back to Moscow took 3 hours (from 3:00 PM to 6:00 PM).

Therefore, the total time the plane spent in the air is 11 hours (6 hours + 2 hours + 3 hours).

Please note that the above calculations are based on the information provided and assume that there were no delays or time zone changes during the journey.