Question

Из населенного пункта выехали в противоположных направлениях 2 всадника. Один всадник ехал со скоростью 9 км/ ч, а другой 11 км/ ч. Через какое время расстояние между ними будет 160 км?

Answer 1

9+11=20 км/ч скорость удаления
160÷20=8 ч 
Ответ через 8 ч

Answer 2

9+11=20
160÷20=8
Ответ:8

Answer 3

Problem Analysis

Two riders are moving in opposite directions with different speeds. We need to determine the time it takes for the distance between them to reach 160 km.

Solution

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

Let's assume that the first rider travels for time t hours, and the second rider also travels for time t hours. The distance traveled by the first rider is given by distance1 = speed1 × t, and the distance traveled by the second rider is given by distance2 = speed2 × t.

Since the riders are moving in opposite directions, the total distance between them is the sum of the distances traveled by each rider: total_distance = distance1 + distance2.

We can set up the equation total_distance = 160 km and solve for t to find the time it takes for the distance between the riders to reach 160 km.

Let's calculate the time using the given speeds and distance:

1. Speed of the first rider: 9 km/h 2. Speed of the second rider: 11 km/h 3. Total distance: 160 km

Calculation

Let's substitute the given values into the equation and solve for t:

total_distance = distance1 + distance2

160 = (9 × t) + (11 × t)

160 = 20 × t

Divide both sides of the equation by 20:

t = 160 / 20

t = 8 hours

Therefore, it will take 8 hours for the distance between the two riders to reach 160 km.

Answer

The distance between the two riders will be 160 km after 8 hours of travel.