Question

Две лошади выбежали из двух сёл,между которыми 30 км одновременно в противоположных направлениях. Найти скорость второй лошади если за 4 часа между ними стало 174 км,а скорость первой лошади 15 км/ч

Answer 1

15*4=60 км пробежала первая лошадь
174-60=114 км пробежела вторая
114/4=28.5 км/ч скорость второй лошади

Answer 2

Problem Analysis

We are given that two horses ran from two villages simultaneously in opposite directions. The distance between the villages is 30 km. After 4 hours, the distance between the horses is 174 km, and the speed of the first horse is 15 km/h. We need to find the speed of the second horse.

Solution

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

The total distance covered by the first horse in 4 hours is 15 km/h * 4 hours = 60 km.

The total distance covered by the second horse in 4 hours is x km/h * 4 hours = 4x km.

The sum of the distances covered by both horses is 60 km + 4x km = 174 km.

We can write this as an equation: 60 + 4x = 174

To find the value of x, we can solve this equation.

Solving the Equation

60 + 4x = 174

Subtract 60 from both sides: 4x = 174 - 60 4x = 114

Divide both sides by 4: x = 114 / 4 x = 28.5

Answer

The speed of the second horse is 28.5 km/h.

Explanation

The first horse covers a distance of 60 km in 4 hours, which means its speed is 15 km/h. The second horse covers a distance of 4x km in 4 hours, which gives us the equation 60 + 4x = 174. Solving this equation, we find that the speed of the second horse is 28.5 km/h.