Question

Из двух городов выехали одновременно навстречу друг другу два мотоциклиста.один из них двигался со скоростью 70 км/ч и проехал до встречи 140 км, а другой двигался со скоростью 65 км/ч.найди расстояние между городами

Answer 1

140:70=2 часа до встречи ехал 1-й, значит, 2*й - столько же. 65*2=130км проехал до встречи 2*й. 140*130-270км - расстояние между городами

Answer 2

Problem Analysis

Two motorcyclists are traveling towards each other from two different cities. We are given the speed of each motorcyclist and the distance traveled by one of them. We need to find the distance between the two cities.

Solution

Let's denote the distance between the two cities as d.

We are given the following information: - Motorcyclist A is traveling at a speed of 70 km/h and has traveled 140 km. - Motorcyclist B is traveling at a speed of 65 km/h.

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

Distance = Speed × Time

For Motorcyclist A, we can calculate the time taken using the formula:

Time = Distance / Speed

Substituting the given values, we have:

Time taken by Motorcyclist A = 140 km / 70 km/h = 2 hours

Since both motorcyclists started at the same time, the time taken by Motorcyclist B will also be 2 hours.

Now, we can find the distance traveled by Motorcyclist B using the formula:

Distance traveled by Motorcyclist B = Speed × Time

Substituting the given values, we have:

Distance traveled by Motorcyclist B = 65 km/h × 2 hours = 130 km

Since the two motorcyclists are traveling towards each other, the sum of the distances traveled by both motorcyclists will be equal to the distance between the two cities.

Therefore, the distance between the two cities is:

Distance between the two cities = Distance traveled by Motorcyclist A + Distance traveled by Motorcyclist B = 140 km + 130 km = 270 km

So, the distance between the two cities is 270 km.

Answer

The distance between the two cities is 270 km.