Question

Два автобуса одновременно выехали навстречу друг другу из двух населённых пунктов,расстояние между которыми 220 км.Встретились эти автобусы через 2 ч. найди среднюю скорость второго автобуса,если средняя скорость первого 60 км/ч.

Answer 1

220:2=110 км/ч скорость сближения
110-60=50 км/ч скорость 2 автобуса

Answer 2

60*2=120 всего проехал первый
220-120=100 всего проехал второй
100/2=50 средняя скорость второго

Answer 3

Problem Analysis

We have two buses that start simultaneously from two different towns and meet each other after 2 hours. The distance between the towns is 220 km. We need to find the average speed of the second bus, given that the average speed of the first bus is 60 km/h.

Solution

To find the average speed of the second bus, we can use the formula:

Average Speed = Total Distance / Total Time

Since the two buses meet each other after 2 hours, we can calculate the total distance covered by both buses in that time. The total distance covered by both buses is equal to the distance between the towns, which is 220 km.

Let's calculate the average speed of the second bus using the formula:

Average Speed of Second Bus = Total Distance / Total Time

Total Distance = 220 km

Total Time = 2 hours

Substituting the values into the formula:

Average Speed of Second Bus = 220 km / 2 hours

Average Speed of Second Bus = 110 km/h

Therefore, the average speed of the second bus is 110 km/h.