Question

Из села выехал всадник.Через 2 часа из того де села выехал в противоположном направлении другой всадник со скоростью 15 км/ч.Через 3 часа,после того как выехал второй всадник,расстояние между ними составило 105 км. Найди скорость первого всадника. Я прошу с вопросами, и полным решением а не просто ответом заранее спасибо всем)!

Answer 1

1)3ч*15км/ч будет 45км это проехал всадник за 3ч 2)105-45будет60км это расстоНие 1всадника за2часа 3)60:на 2будет 30км/ч вот и все это скорость 1 всадника

Answer 2

Problem Analysis

We are given the following information: - A rider leaves a village and after 2 hours, another rider leaves the same village in the opposite direction with a speed of 15 km/h. - After 3 hours of the second rider's departure, the distance between them is 105 km.

We need to find the speed of the first rider.

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

Let's assume the speed of the first rider is x km/h. We can calculate the distance traveled by the first rider in 2 hours as 2x km. Similarly, the distance traveled by the second rider in 3 hours is 15 × 3 = 45 km.

Using the formula, we can set up the equation: 2x + 45 = 105.

We can solve this equation to find the value of x, which represents the speed of the first rider.

Solution

Let's solve the equation to find the speed of the first rider:

2x + 45 = 105

Subtract 45 from both sides:

2x = 105 - 45

Simplify:

2x = 60

Divide both sides by 2:

x = 60 / 2

Simplify:

x = 30

Therefore, the speed of the first rider is 30 km/h.

Answer

The speed of the first rider is 30 km/h.

Please let me know if I can help you with anything else.