Question

Поезд должен проехать 1200 км за 16 км.Первые 35% пути поезд проехал за 6 часов. С какой скоростью ему надо ехать дальше,чтобы прибыть в пункт назначения по расписанию ?

Answer 1

1) Сначала пропорцией вычисляем, чему равны 35% пути.
1200 - 100%
х - 35%
х=(1200*35):100
х=420 (км) - проехал поезд за первые 6 часов.
2) 16-6=10 (ч) - остаток времени.
3) 1200-420=780 (км) - остаток пути.
Если нам известно время и расстояние, можно уже ответить на вопрос задачи.
4) 780:10=78 (км/ч) - с такой скоростью еужно ехать дальше.
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 travel a total distance of 1200 km and 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

We are also given the time it took for the train to travel this distance: - Time taken = 6 hours

Now, let's calculate the remaining distance the train needs to travel: - Remaining distance = Total distance - Distance traveled = 1200 km - 420 km = 780 km

We can use the formula: speed = distance / time to find the speed at which the train needs to continue traveling.

Solution

To find the speed at which the train needs to continue traveling, we can use the formula: speed = distance / time.

Substituting the values we have: - Distance = 780 km - Time = 6 hours

We can calculate the speed as follows: - Speed = 780 km / 6 hours = 130 km/h

Therefore, the train needs to continue traveling at a speed of 130 km/h in order to arrive at its destination on schedule.

Please note that this calculation assumes a constant speed throughout the journey and does not account for any stops or delays that may occur during the trip.

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