Question

Часов двух городов на встречу друг другу отправились скорый и товарный поезда они встретились через 10часов каково расстояние между городами если известно что скорость скорого поезда 90км/ч а скорость товарного поезда состовляет половину от его скорости

Answer 1

1) 90:2=45 (км/ч)-скорость товарного поезда
2) 90*10=900 (км)- проехал скорый поезд
3) 45*10=450 (км)-проехал товарный поезд
4) 900+450=1350 (км)
Ответ: 1350 км расстояние между городами.
-Настя-
Надеюсь помогла :)

Answer 2

Problem Analysis

We are given that two trains, a fast train and a freight train, set off towards each other from two cities. They meet after 10 hours. We are also given that the speed of the fast train is 90 km/h, and the speed of the freight train is half of the speed of the fast train. We need to find the distance between the two cities.

Solution

Let's denote the distance between the two cities as d.

We know that the time it takes for the two trains to meet is 10 hours.

The formula to calculate the distance is:

Distance = Speed × Time

For the fast train, the speed is given as 90 km/h, and the time is 10 hours. Therefore, the distance covered by the fast train is:

Distance_fast_train = 90 km/h × 10 hours

For the freight train, the speed is half of the speed of the fast train, which is 45 km/h. Therefore, the distance covered by the freight train is:

Distance_freight_train = 45 km/h × 10 hours

Since the two trains are traveling towards each other, the sum of the distances covered by both trains will give us the total distance between the two cities:

Total_distance = Distance_fast_train + Distance_freight_train

Let's calculate the total distance:

Total_distance = (90 km/h × 10 hours) + (45 km/h × 10 hours)

Now we can calculate the total distance between the two cities.

Calculation

Total_distance = (90 km/h × 10 hours) + (45 km/h × 10 hours)

Total_distance = 900 km + 450 km

Total_distance = 1350 km

Therefore, the distance between the two cities is 1350 km.

Answer

The distance between the two cities is 1350 km.