Question

Из двух сёл ,расстояние мужду которыми 27 км ,вышли одновременно навстречу две группы туристов и встретились через 3 ч .Скорость первой группы 5 км/ч .Определи скорость второй группы .

Answer 1

1) 27 : 3 =9 км/ч скорость сближения групп 

2) 9-5=4 км/ч скорость второй группы

Answer 2

Problem Analysis

We have two groups of tourists who start simultaneously from two villages and meet each other after 3 hours. The speed of the first group is given as 5 km/h. We need to determine the speed of the second group.

Solution

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

To solve this problem, we can use the formula: distance = speed × time.

The distance covered by the first group is 5 km/h × 3 h = 15 km.

The distance covered by the second group is also x km/h × 3 h = 3x km.

Since the total distance between the two villages is 27 km, we can set up the equation:

15 km + 3x km = 27 km

Simplifying the equation, we get:

3x km = 27 km - 15 km

3x km = 12 km

Dividing both sides of the equation by 3, we find:

x km = 12 km / 3

x km = 4 km/h

Therefore, the speed of the second group is 4 km/h.

Answer

The speed of the second group of tourists is 4 km/h.