Question

Из двух городов навстречу друг другу выехали две машины. Скорость первой-60км/ч, скорость второй-80км/ч.Через сколько часов машины встретятся,если расстояния между городами 280км/ч?

Answer 1

80+60=140(км/ч)
280/140=2(ч)
Ответ:через 2 часа

Answer 2

Problem Analysis

We have two cars traveling towards each other from two different cities. The speed of the first car is 60 km/h, and the speed of the second car is 80 km/h. The distance between the cities is 280 km. We need to calculate how many hours it will take for the cars to meet.

Solution

To find the time it takes for the cars to meet, we can use the formula:

Time = Distance / Relative Speed

The relative speed is the sum of the speeds of the two cars.

Let's calculate the time it takes for the cars to meet.

Calculation

The relative speed of the two cars is 60 km/h + 80 km/h = 140 km/h.

Using the formula, we can calculate the time it takes for the cars to meet:

Time = Distance / Relative Speed

Time = 280 km / 140 km/h = 2 hours.

Therefore, the cars will meet after 2 hours.

Answer

The cars will meet after 2 hours.