Question

1) Из города одновременно в противоположных направлениях выехали два велосипедиста. Скорость первого – 8 км/ч. С какой скоростью ехал второй велосипедист, если через 3 часа расстояние между ними было 54 км

Answer 1

Ответ:10 км/ч

Пошаговое объяснение:
1). 8*3=24(км)-проехал 1-ый велосипедист
2).54-24=30(км)-проехал 2-ой велосипедист
3).30:3=10(км/ч) - скорость 2-го велосипедиста

Answer 2

Problem Analysis

Two cyclists start from the same city in opposite directions. The speed of the first cyclist is given as 8 km/h. After 3 hours, the distance between them is 54 km. We need to find the speed of the second cyclist.

Solution

Let's assume the speed of the second cyclist is x km/h.

The distance covered by the first cyclist in 3 hours is 8 km/h * 3 hours = 24 km.

The distance covered by the second cyclist in 3 hours is x km/h * 3 hours = 3x km.

Since they are moving in opposite directions, the total distance between them after 3 hours is the sum of the distances covered by both cyclists:

24 km + 3x km = 54 km

To find the speed of the second cyclist, we can solve this equation for x.

24 km + 3x km = 54 km

Subtracting 24 km from both sides:

3x km = 54 km - 24 km

Simplifying:

3x km = 30 km

Dividing both sides by 3:

x km = 10 km/h

Therefore, the speed of the second cyclist is 10 km/h.

Answer

The second cyclist was traveling at a speed of 10 km/h.