Question

Из паселка вышли одновременно в противоположных направлениях два пешехода .Скорость одного пешехода 5 км/ч скорость другого 4км/ч .Через сколько часов расстояния между ними будет 27 км? ПОЖАЛУЙСТА ПОМОГИТЕ

Answer 1

1)5+4=9 (км/ч)- общая скорость 2) 27:9=3 (ч)- через 3 часа Ответ:через 3 часа.

Answer 2

1)5+4=9( км\ч)-общая скорость.
2) 27÷9=3 ( ч)
Ответ: 3 часа.

Answer 3

Problem Analysis

We have two pedestrians walking in opposite directions. The speed of one pedestrian is 5 km/h, and the speed of the other pedestrian is 4 km/h. We need to find out how many hours it will take for the distance between them to be 27 km.

Solution

To find the time it takes for the distance between the pedestrians to be 27 km, we can use the formula:

Time = Distance / Relative Speed

The relative speed is the sum of the speeds of the two pedestrians since they are moving in opposite directions.

Let's calculate the time it takes:

Relative Speed = Speed of Pedestrian 1 + Speed of Pedestrian 2

Relative Speed = 5 km/h + 4 km/h = 9 km/h

Time = Distance / Relative Speed

Time = 27 km / 9 km/h = 3 hours

Therefore, it will take 3 hours for the distance between the two pedestrians to be 27 km.

Answer

It will take 3 hours for the distance between the two pedestrians to be 27 km.