Question

Из пункта А одновременно в противоположных направлениях выехали два велосипедиста скорость скорость первого 18 километров в час второго на три километра меньше На каком расстоянии они будут через 3 часа

Answer 1

18-3=15(км/ч)-скорость второго;
18+15=33(км/ч)-скорость отдаления;
33×3=99(км)-расстояние через 3 часа

Answer 2

Problem Analysis

Two cyclists start from point A in opposite directions. The first cyclist has a speed of 18 kilometers per hour, while the second cyclist has a speed that is three kilometers per hour slower. We need to determine the distance between them after three hours.

Solution

To find the distance between the two cyclists after three hours, we can calculate the distance traveled by each cyclist and then add them together.

Let's calculate the distance traveled by the first cyclist: - Speed of the first cyclist = 18 kilometers per hour - Time traveled = 3 hours - Distance traveled by the first cyclist = Speed * Time = 18 km/h * 3 h = 54 kilometers

Now let's calculate the distance traveled by the second cyclist: - Speed of the second cyclist = Speed of the first cyclist - 3 kilometers per hour = 18 km/h - 3 km/h = 15 kilometers per hour - Time traveled = 3 hours - Distance traveled by the second cyclist = Speed * Time = 15 km/h * 3 h = 45 kilometers

Finally, we can add the distances traveled by both cyclists to find the total distance between them: - Total distance = Distance traveled by the first cyclist + Distance traveled by the second cyclist = 54 kilometers + 45 kilometers = 99 kilometers

Therefore, after three hours, the two cyclists will be 99 kilometers apart.

Answer: The two cyclists will be 99 kilometers apart after three hours.