Question

Одночасно з двору виїхали та поїхали у протележних напрямках велосипедист та мотоцикліст.Велосипедист рухався зі швидкістю 15 км за год. а мотоцикліст зі швидкістю у 3 рази більшою.Через який час відстань між ними буде 120 км?

Answer 1

1) 15*3=45(км/год) - швидкість мотоцикліста;

2) 45+15=60(км) - проїде велосипедист і мотоцикліст разом;

3) 120:60=2(год) - потрібно щоб проїхати 120 км.

Answer 2

15+45=60 км/год вона проїжають разом за годину

120 : 60 = 2 години потрібно щоб відстань мід ними була 120 км

 

======================================================

Answer 3

Problem Analysis

We have a situation where a cyclist and a motorcyclist start simultaneously from the same point and travel in opposite directions. The cyclist is traveling at a speed of 15 km/h, while the motorcyclist is traveling at a speed three times greater. We need to determine the time it takes for the distance between them to reach 120 km.

Solution

Let's assume that the time it takes for the distance between them to reach 120 km is 't' hours.

The cyclist's speed is 15 km/h, so in 't' hours, the cyclist will have traveled a distance of 15t km.

The motorcyclist's speed is three times greater, so the motorcyclist's speed is 3 * 15 = 45 km/h. In 't' hours, the motorcyclist will have traveled a distance of 45t km.

Since they are traveling in opposite directions, the total distance between them is the sum of the distances traveled by each of them. Therefore, the equation becomes:

15t + 45t = 120

Simplifying the equation:

60t = 120

Dividing both sides of the equation by 60:

t = 2

Therefore, it will take 2 hours for the distance between the cyclist and the motorcyclist to reach 120 km.

Answer

The distance between the cyclist and the motorcyclist will be 120 km after 2 hours.