Question

Из двух городов,расстояние между которыми 960 км,шли два поезда навстречу друг другу и встретились на середине пути.Первый поезд шел со средней скоростью 60 км/ч а второй 80 км/ч какой поезд затратил на путь до встречи больше времени и на сколько часов?

Answer 1

1) 960:60=16(час) затратил первый поезд
2) 960:80=12(час) затратил второй поезд
3)16-12=4(час)
Ответ: больше времени затратил первый поезд на 4 часа

Answer 2

1) 960 : 60 = 16 часов затратил первый поезд

2) 960 : 80 = 12 часов затратил второй поезд

3) 16 - 12 = на  4 часа больше затратил первый поезд чем второй

Ответ: на 4 часа

Answer 3

Problem Analysis

We are given that two trains are traveling towards each other from two cities, and they meet at the midpoint of the distance between the cities. The first train is traveling at an average speed of 60 km/h, and the second train is traveling at an average speed of 80 km/h. We need to determine which train took more time to reach the meeting point and by how many hours.

Solution

To solve this problem, we can use the formula: time = distance / speed.

Let's assume the distance between the two cities is D km. Since the trains meet at the midpoint, each train travels half the distance, which is D/2 km.

We can calculate the time taken by each train as follows:

- Time taken by the first train: time1 = (D/2) / 60 hours - Time taken by the second train: time2 = (D/2) / 80 hours

To determine which train took more time, we can compare time1 and time2.

If time1 is greater than time2, it means the first train took more time to reach the meeting point. If time2 is greater than time1, it means the second train took more time.

Let's calculate the time taken by each train and determine which train took more time.

Calculation

Given: - Distance between the two cities: 960 km - Speed of the first train: 60 km/h - Speed of the second train: 80 km/h

Using the formula time = distance / speed, we can calculate the time taken by each train:

- Time taken by the first train: time1 = (960/2) / 60 = 8 hours - Time taken by the second train: time2 = (960/2) / 80 = 6 hours

Answer

The second train took more time to reach the meeting point, and it took 6 hours to reach the meeting point.