Question

Из пункта А в пункт Б выехал автомобиль "Волга" со скоростью 80км/ч. В тоже время из пункта Б в пункт А ему навстречу выехал автомобиль "Жигули". В 12ч дня машины проехали мимо друг друга. В 12ч 32мин "Волга" прибыла в пункт Б, а ещё через 18 мин "Жигули" прибыли в пункт А. Вычислите скорость "Жигулей".

Answer 1

Я неуверен но мнекажется что жигули ехал со скоростью 78километров в час

Answer 2

Calculating the Speed of the "Жигули" Car

To calculate the speed of the "Жигули" car, we can use the information provided in the question and the time it took for both cars to reach their destinations.

Given: - The "Волга" car traveled from point A to point B at a speed of 80 km/h. - The "Жигули" car traveled from point B to point A.

We know that the two cars passed each other at 12:32 PM and that the "Волга" car arrived at point B at 12:32 PM, while the "Жигули" car arrived at point A 18 minutes later, at 12:50 PM.

Calculating the Distance

To calculate the speed of the "Жигули" car, we first need to calculate the distance between point A and point B.

The "Волга" car traveled for 32 minutes (from 12:00 PM to 12:32 PM) at a speed of 80 km/h. Using the formula distance = speed × time, we can calculate the distance covered by the "Волга" car: ``` Distance = Speed × Time Distance = 80 km/h × (32/60) h Distance = 42.67 km ``` So, the distance between point A and point B is 42.67 km.

Calculating the Speed of the "Жигули" Car

Now that we know the distance between point A and point B, we can calculate the speed of the "Жигули" car.

The "Жигули" car arrived at point A 18 minutes after passing the "Волга" car. This means it took 18 minutes to cover the distance of 42.67 km.

Using the formula speed = distance / time, we can calculate the speed of the "Жигули" car: ``` Speed = Distance / Time Speed = 42.67 km / (18/60) h Speed = 142.23 km/h ``` So, the speed of the "Жигули" car is approximately 142.23 km/h.