Question

помогите решить задачу!!! Поезд должен проехать расстояние 1200 км за 16 часов.Оказалось,что первые 35% пути он преодолел за 6 часов.С какой скоростью ему надо двигаться дальше, чтобы прибыть в пункт назначения по расписанию?

Answer 1

1) 1200:100= 12(км)- составляет один процент
2) 12*35= 420 (км) - поезд проехал за 6 часов
3) 16-6=10 ч осталось, чтобы приехать в пункт назначения по расписанию
4) 1200-420= 780(км) осталось проехать поезду
5) 780:10= 78( км\ч) надо ехать поезду чтобы успеть

Ответ: 78 км\ч

Answer 2

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 cover a distance of 1200 km in 16 hours. We also know that the train has already covered the first 35% of the distance in 6 hours.

Calculation

Let's calculate the distance covered by the train in the first 6 hours: Distance covered in the first 6 hours = 35% of 1200 km = 0.35 * 1200 km = 420 km

Now, let's calculate the remaining distance that the train needs to cover: Remaining distance = Total distance - Distance covered in the first 6 hours = 1200 km - 420 km = 780 km

We also know that the train has 10 hours left to cover this remaining distance.

Solution

To find the speed at which the train needs to travel for the remaining distance, we can use the formula: Speed = Distance / Time

Let's calculate the speed: Speed = Remaining distance / Remaining time = 780 km / 10 hours = 78 km/h

Therefore, the train needs to travel at a speed of 78 km/h for the remaining distance in order to arrive at its destination on schedule.

Answer

The train needs to travel at a speed of 78 km/h for the remaining distance in order to arrive at its destination on schedule.