Question

Из двух городов в 7ч утра навстречу друг другу выехали две машины. В 10 ч они встретились. найди расстояние между городами, если одна машина шла со скоростью 60 км/ч, а скорость другой была в 1,2 раза больше

Answer 1

10-7=3 часа - время в пути

60х1,2=72км/ч - скорость второй машины

(60+72)х3=396 км - расстояние

Answer 2

Problem Analysis

We have two cars that start from two different cities and meet each other at 10 AM. One car is traveling at a speed of 60 km/h, while the speed of the other car is 1.2 times greater. We need to find the distance between the two cities.

Solution

Let's assume that the speed of the second car is 1.2 times greater than the speed of the first car. Therefore, the speed of the second car is 1.2 * 60 km/h = 72 km/h.

To find the distance between the two cities, we can use the formula:

Distance = Speed * Time

The time taken by both cars to meet each other is 10 AM - 7 AM = 3 hours.

For the first car: Speed = 60 km/h Time = 3 hours

For the second car: Speed = 72 km/h Time = 3 hours

Now we can calculate the distances traveled by both cars and add them to find the total distance between the two cities.

Distance traveled by the first car = Speed * Time = 60 km/h * 3 hours = 180 km

Distance traveled by the second car = Speed * Time = 72 km/h * 3 hours = 216 km

Total distance between the two cities = Distance traveled by the first car + Distance traveled by the second car = 180 km + 216 km = 396 km

Therefore, the distance between the two cities is 396 km.

Answer

The distance between the two cities is 396 km.