Question

Два велосипедиста выехали одновременно навстречу друг другу. Скорость одного - 12 км/ч, другого - 18 км/ч. Встретятся ли велосипедисты через час, если расстояние между ними 40 км?

Answer 1

За час они проедут 18+12=30 км, значит между ними останется еще 10км. Ответ: нет.

Answer 2

Нет, так как 12+18=30км они проедут

Answer 3

Problem Analysis

We have two cyclists who start simultaneously and are heading towards each other. The speed of one cyclist is 12 km/h, and the speed of the other cyclist is 18 km/h. We need to determine if the cyclists will meet after one hour, given that the distance between them is 40 km.

Solution

To solve this problem, we can calculate the distance each cyclist covers in one hour and check if the total distance covered by both cyclists is equal to or greater than the distance between them.

Let's calculate the distance covered by each cyclist in one hour:

- Cyclist 1: Speed = 12 km/h, Time = 1 hour, Distance = Speed * Time = 12 km - Cyclist 2: Speed = 18 km/h, Time = 1 hour, Distance = Speed * Time = 18 km

The total distance covered by both cyclists in one hour is 12 km + 18 km = 30 km.

Since the total distance covered by both cyclists in one hour (30 km) is less than the distance between them (40 km), the cyclists will not meet after one hour.

Answer

The cyclists will not meet after one hour if the distance between them is 40 km, given that one cyclist has a speed of 12 km/h and the other has a speed of 18 km/h.

Note: The answer is based on the assumption that the cyclists maintain a constant speed throughout the journey and there are no other factors affecting their motion.