Question

От пристани одновременно в противоположных на правлениях отошли два телохода.Первый поезд шел со скоростью 42 км/ч,а второй-со скоростью 36 км/ч.Через сколько часов расстояние между ними будет 936 км?

Answer 1

Мы сначало находим V удаления это 42-36=6(км/ч)- V уд.
Потом мы находим t это 936:6=156(ч)

Answer 2

42-36=6(ч)-но это не точный ответ

Answer 3

Problem Analysis

We are given two ships that depart simultaneously from a port in opposite directions. The first ship is traveling at a speed of 42 km/h, and the second ship is traveling at a speed of 36 km/h. We need to determine how many hours it will take for the distance between the two ships to reach 936 km.

Solution

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

Let's assume that the time it takes for the distance between the two ships to reach 936 km is t hours.

The distance traveled by the first ship can be calculated as: distance1 = speed1 × t.

Similarly, the distance traveled by the second ship can be calculated as: distance2 = speed2 × t.

Since the ships are moving in opposite directions, the total distance between them is the sum of the distances traveled by each ship: distance1 + distance2 = 936 km.

Substituting the values, we get: speed1 × t + speed2 × t = 936 km.

We can simplify this equation to: (speed1 + speed2) × t = 936 km.

Now, we can solve for t by dividing both sides of the equation by the sum of the speeds: t = 936 km / (speed1 + speed2).

Let's calculate the value of t using the given speeds:

speed1 = 42 km/h and speed2 = 36 km/h.

Substituting these values, we get: t = 936 km / (42 km/h + 36 km/h).

Calculating the sum of the speeds, we get: t = 936 km / 78 km/h.

Now, let's calculate the value of t:

t = 936 km / 78 km/h = 12 hours.

Therefore, it will take 12 hours for the distance between the two ships to reach 936 km.

Answer

It will take 12 hours for the distance between the two ships to reach 936 km.