Question

6 класс. с написанием (Пусть х тота тота тогда что то там) Из села в направлении города выехал мотоциклист со скоростью 80 кмч. Через 3 часа выехал велосипедист со скоростью 18 кмч. Через сколько часов они встретятся если расстояние между селом и городом 436 км

Answer 1

Ответ:

Пусть велосипедист ехал до встречи X часов (18*x) км.

Тогда мотоциклист ехал (X+3) час и проехал 80*(x+3) км.

Из этого вытекает:

18x+80(x+3)=436

18x+80x+80*3=436

240+98x=436

98x=436-240

98x=196

x=196/98

x=2

Через 2 часа они увидятся)

Как то так)

Answer 2

Problem Analysis

We are given that a motorcyclist travels from a village to a city at a speed of 80 km/h, and after 3 hours, a cyclist starts from the same village to the same city at a speed of 18 km/h. We need to determine how many hours it will take for them to meet if the distance between the village and the city is 436 km.

Calculation

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

Let's assume the time it takes for the motorcyclist and the cyclist to meet is t hours.

The distance traveled by the motorcyclist in t hours is: 80t km.

The distance traveled by the cyclist in t - 3 hours is: 18(t - 3) km.

Since the total distance traveled by both the motorcyclist and the cyclist is equal to the distance between the village and the city, we can set up the following equation:

80t + 18(t - 3) = 436

Now, let's solve this equation to find the value of t.

Solution

Expanding the equation, we get:

80t + 18t - 54 = 436

Combining like terms, we have:

98t - 54 = 436

Adding 54 to both sides, we get:

98t = 490

Dividing both sides by 98, we find:

t = 5

Therefore, it will take 5 hours for the motorcyclist and the cyclist to meet.

Answer

The motorcyclist and the cyclist will meet after 5 hours.

Note: The answer provided is based on the given information and calculations.