Question

Из двух пунктов навстречу друг другу одновременно выехали 2 автобуса. Скорость одного автобуса 45 Км/ч, а скорость второго 72 Км/ч. Первый автобус до встречи проехал 135км. Найдите расстояние между пунктами.

Answer 1

1) узнаем, сколько часов ехал первый автобус до встречи 135:45=3 (ч) 2) рассчитаем, сколько проехал второй автобус до встречи 3*72= 216(км) 3) узнаем расстояние между пунктами 216+ 135=351(км) Ответ: 351км

Answer 2

Problem Analysis

We are given that two buses start simultaneously from two points and travel towards each other. The speed of the first bus is 45 km/h, and the speed of the second bus is 72 km/h. We are also given that the first bus travels 135 km before they meet. We need to find the distance between the two points.

Solution

To find the distance between the two points, we can use the formula:

Distance = Speed × Time

Let's calculate the time it takes for the two buses to meet.

The time taken by the first bus to travel 135 km can be calculated as:

Time taken by the first bus = Distance / Speed = 135 km / 45 km/h = 3 hours.

Similarly, the time taken by the second bus to travel the same distance can be calculated as:

Time taken by the second bus = Distance / Speed = 135 km / 72 km/h ≈ 1.875 hours.

Since the two buses start simultaneously, they will meet after the same amount of time. Therefore, we can use either of the two times to calculate the distance between the two points.

Let's calculate the distance using the time taken by the first bus:

Distance = Speed × Time = 45 km/h × 3 hours = 135 km.

Therefore, the distance between the two points is 135 km.

Answer

The distance between the two points is 135 km.