Question

Из одного посёлка в противоположных направлениях выехали одновременно два автобуса.Через4 часа расстояние между ними составило 620км. С какой скоростью ехал второй автобус.если скорость первого была 80км/

Answer 1

1) 620:4=155 км/час скорость удаления автобусов                                             2)155-80=75 км/час скорость 2 автобуса                                                               Ответ: 2 автобус ехал со скоростью 75 км/час

Answer 2

1)80*4=320(км)-проехалпервый автобус за 4ч.
2)620-320=300(км)-проехал второй автобус за 4 часа.
3)300:4=75(км\ч) с такой скоростью ехал второй автобус. о т в е т: 75 км\ч

Answer 3

Problem Analysis

We have two buses that start from the same village in opposite directions. After 4 hours, the distance between them is 620 km. We need to find the speed of the second bus, given that the speed of the first bus is 80 km/h.

Solution

Let's assume the speed of the second bus is x km/h.

The distance covered by the first bus in 4 hours is: Distance1 = Speed1 * Time = 80 km/h * 4 h = 320 km.

The distance covered by the second bus in 4 hours is: Distance2 = Speed2 * Time = x km/h * 4 h = 4x km.

The total distance between the two buses after 4 hours is 620 km. Therefore, we can write the equation: Distance1 + Distance2 = 620 km.

Substituting the values of Distance1 and Distance2, we get: 320 km + 4x km = 620 km.

Simplifying the equation, we have: 4x km = 620 km - 320 km.

Solving for x, we get: 4x km = 300 km.

Dividing both sides of the equation by 4, we find: x km = 300 km / 4.

Calculating the value of x, we get: x = 75 km/h.

Therefore, the second bus was traveling at a speed of 75 km/h.

Answer

The second bus was traveling at a speed of 75 km/h.