Question

Мотоциклист за 3 часа проезжает такое же расстояние какое велосипедист За 5 часов Найдите скорость мотоциклиста если известно что скорость велосипедиста на 8 км ч меньше. ​

Answer 1

Ответ:

Объяснение:

3х = 5 (х -8)

3х = 5х -40

2х = 40

х = 40 : 2

х = 20

20 - 8 = 12

проверка:

20· 3 = 12 ·5

60 = 60 - верно

Answer 2

Ответ:

20 км/ч - скорость мотоциклиста

12 км/м - скорость велосипедиста

Объяснение:

х - скорость мотоциклиста

х - 8 - скорость велосипедиста

Расстояние равно скорости, умноженной на время

s = v × t

3х = 5 (х -8)

3х = 5х -40

2х = 40

х = 40 : 2

х = 20

20 - 8 = 12

проверка:

20· 3 = 12 ·5

60 = 60 - верно

Answer 3

Problem Analysis

We are given that a motorcyclist travels the same distance in 3 hours as a cyclist does in 5 hours. We need to find the speed of the motorcyclist, given that the cyclist's speed is 8 km/h less than the motorcyclist's speed.

Solution

Let's assume the speed of the motorcyclist is x km/h. According to the problem, the speed of the cyclist is 8 km/h less than the motorcyclist's speed, so the cyclist's speed is x - 8 km/h.

We can use the formula speed = distance / time to find the distance traveled by each person.

The motorcyclist travels the same distance in 3 hours, so the distance traveled by the motorcyclist is 3x km.

The cyclist travels the same distance in 5 hours, so the distance traveled by the cyclist is 5(x - 8) km.

Since both distances are the same, we can set up the equation:

3x = 5(x - 8)

Now, let's solve this equation to find the value of x.

Calculation

Expanding the equation:

3x = 5x - 40

Rearranging the equation:

2x = 40

Dividing both sides by 2:

x = 20

Answer

The speed of the motorcyclist is 20 km/h.

Explanation

According to the given information, the motorcyclist travels the same distance in 3 hours as the cyclist does in 5 hours. By setting up and solving an equation, we found that the speed of the motorcyclist is 20 km/h.