Question

Из двух городов расстояние между которыми 750 км,выехали одновременно навстречу друг другу два поезда.Через сколько часов они встретятся,если скорость первого поезда-91км/ч,а скорость второго-59км/ч

Answer 1

1) 91+59=150(км\ч) - Скорость двух поездов..
2) 750/150=(5 ч. ) - Через ск. часов они встретятся.
Ответ: Через 5 часов они встретятся.

Answer 2

Problem Analysis

We are given that two trains start simultaneously from two cities that are 750 km apart and are moving towards each other. The speed of the first train is 91 km/h, and the speed of the second train is 59 km/h. We need to find out how many hours it will take for the trains to meet.

Solution

To solve this problem, we can use the formula:

Time = Distance / Speed

Let's calculate the time it will take for the trains to meet.

The distance between the two cities is 750 km. Since the trains are moving towards each other, the effective speed at which they are approaching each other is the sum of their individual speeds.

The speed of the first train is 91 km/h, and the speed of the second train is 59 km/h. Therefore, the effective speed at which the trains are approaching each other is:

Effective Speed = Speed of First Train + Speed of Second Train

Effective Speed = 91 km/h + 59 km/h

Now, we can calculate the time it will take for the trains to meet using the formula:

Time = Distance / Effective Speed

Time = 750 km / (91 km/h + 59 km/h)

Let's calculate the time:

Time = 750 km / 150 km/h

Time = 5 hours

Therefore, it will take 5 hours for the trains to meet.

Answer

The two trains will meet after 5 hours.