Question

Реши задачу. Два всадника выехали одновременно навстречу друг другу из двух пунктов, расстояние между которыми 100 км. Всадники встретились через4часа. Найдете скорость первого всадника, если скорость второго-13км/час.

Answer 1

1)100/4=25 (км/ч) общая скорость
2)25-13=12 (км/ч) скорость второго

Answer 2

1) 13*4=52 (км)- проехал второй всадник 2) 100-52=48 (км)- проехал первый всадник 3) 48:4=12 (км/ч)- скорость первого всадника Ответ: скорость первого всадника 12км/ч

Answer 3

Problem Analysis

We are given that two riders start simultaneously from two different points and meet after 4 hours. The distance between the two points is 100 km. The speed of the second rider is given as 13 km/h. We need to find the speed of the first rider.

Solution

Let's assume the speed of the first rider is x km/h.

We can use the formula: distance = speed × time to solve this problem.

The distance covered by the first rider in 4 hours is 4x km.

The distance covered by the second rider in 4 hours is 13 × 4 = 52 km.

Since the total distance between the two riders is 100 km, we can write the equation:

4x + 52 = 100

Simplifying the equation:

4x = 100 - 52

4x = 48

Dividing both sides by 4:

x = 48/4

x = 12

Therefore, the speed of the first rider is 12 km/h.

Answer

The speed of the first rider is 12 km/h.