Question

2 автобуса одновременно выехали из двух городов навстречу друг другу со скоростями 65 км/ч и 75 км/ч.Через какое время они встретятся если расстояние между городами 280 км?

Answer 1

1) 65 + 75 = 140 км/ч скорость сближения
2) 280 : 140 = 2 часа будет встреча через 2 часа

Answer 2

280:(65+75)=4 часа
Через 4 часа автобусы встретятся

Answer 3

Problem Analysis

We are given that two buses start simultaneously from two different cities towards each other. The first bus has a speed of 65 km/h, and the second bus has a speed of 75 km/h. We need to determine how long it will take for them to meet if the distance between the cities is 280 km.

Solution

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

Let's calculate the time it takes for each bus to cover the distance between the cities:

- For the first bus: time = distance / speed = 280 km / 65 km/h. - For the second bus: time = distance / speed = 280 km / 75 km/h.

To find the total time it takes for the two buses to meet, we need to add the times together.

Calculation

Let's calculate the time it takes for each bus to cover the distance between the cities:

- For the first bus: time = 280 km / 65 km/h = 4.3077 hours. - For the second bus: time = 280 km / 75 km/h = 3.7333 hours.

To find the total time it takes for the two buses to meet, we add the times together: 4.3077 hours + 3.7333 hours = 8.041 hours.

Answer

The two buses will meet after approximately 8.041 hours.

Please note that the above calculations are based on the given speeds and distance.