Question

Из города в одном и том же направлении выехали легковой автомобиль и автобус. Скорость автомобиля 90 км/ч. Через 4 ч. расстояние между ними стало 80 км. Какова скорость автобуса (в км/ч)?

Answer 1

Ответ:

70км/ч

Пошаговое объяснение:

90*4=360

360-80 =280

280:4=70 км/ч

понравилось решения ?

выбери пожалуйста как лучший ответ

Answer 2

Problem Analysis

We are given that a car and a bus start from the same city and travel in the same direction. The car's speed is 90 km/h, and after 4 hours, the distance between the car and the bus is 80 km. We need to find the speed of the bus.

Solution

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

After 4 hours, the car has traveled a distance of 90 km/h * 4 h = 360 km.

The distance between the car and the bus is 80 km.

Since the car and the bus are traveling in the same direction, the bus must have traveled a distance of 360 km + 80 km = 440 km in 4 hours.

To find the speed of the bus, we can divide the total distance traveled by the bus (440 km) by the time taken (4 hours):

x = 440 km / 4 h = 110 km/h

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

Answer

The speed of the bus is 110 km/h.