Question

Поезд должен проехать 1200км за 16ч.Оказалось,что первые 35% пути поезд проехал за 6ч.С какой скоростью ему надо ехать дальше,чтобы прибыть в пункт назначения по расписанию?и помогите вот это решить пожалуйсто(570*409-43516:86*275):4-(73720:76+1668)*7

Answer 1

Задача

1).1200*35:100=420(км)-первый отрезок пути.

2).16-6=10(ч)-осталось на второй отрезок пути.

3).1200-420=780(км)- осталось проехать.

4).780:10=78(км/ч)

Ответ: поезду надо ехать дальше со скоростью 78 км/ч.

 

Пример

570*409=233130

43516:86=506

506*275=139150

233130-139150=93980

73720:76=970

1668+970=2638

93980:4=23495

2638*7=18466

23495-18466=5029

Ответ:пример равен 5029.

Answer 2

1200*0,35=420 км - проехал за 6 часов

1200-420=780 км - осталось пройти

16-6=10 ч - осталось времени

780/10=78 км/ч - нужная скорость

 

 

 

(570*409-43516:86*275):4-(73720:76+1668)*7=(233130-506*275)/4-(970+1668)*7=(233130-139150)/4-(2638)*7=93980/4-18466=23495-18466=5029

Answer 3

Problem Analysis

To solve this problem, we need to find the speed at which the train should continue to travel in order to arrive at its destination on schedule. We are given that the train needs to travel a total distance of 1200 km in 16 hours. We are also given that the train has already traveled the first 35% of the distance in 6 hours.

Calculation

Let's calculate the distance the train has already traveled: - Distance traveled = 35% of 1200 km = 0.35 * 1200 km = 420 km

Let's calculate the time remaining for the train to reach its destination: - Time remaining = Total time - Time spent = 16 hours - 6 hours = 10 hours

Let's calculate the distance remaining for the train to reach its destination: - Distance remaining = Total distance - Distance traveled = 1200 km - 420 km = 780 km

Now, we can calculate the speed at which the train needs to continue traveling to cover the remaining distance in the remaining time: - Speed = Distance remaining / Time remaining = 780 km / 10 hours = 78 km/h

Answer

Therefore, the train needs to continue traveling at a speed of 78 km/h in order to arrive at its destination on schedule.

Note: The calculation assumes a constant speed throughout the journey.