Question

Между двумя портами 484 км. Из них одновременно вышли навстречу друг другу два теплохода и встретились через 4 ч после начала движения. Скорость одного теплохода 45 км/ч. Определи скорость другого теплохода

Answer 1

45*4=180км - прошел первый теплоход

484-180=304км - прошел второй

304:4=76 км/ч скорость 2-го теплохода

Answer 2

Problem Analysis

We have two ships that start simultaneously from two ports and meet each other after 4 hours. We know the distance between the ports is 484 km and the speed of one ship is 45 km/h. We need to determine the speed of the other ship.

Solution

Let's assume the speed of the other ship is x km/h.

We can use the formula: speed = distance / time to find the time it takes for each ship to meet.

For the ship with a speed of 45 km/h: - Distance = 484 km - Time = 4 hours

Using the formula, we can find the time it takes for the ship with a speed of 45 km/h to meet the other ship: 45 = 484 / t (where t is the time taken by the ship with a speed of 45 km/h to meet the other ship)

Simplifying the equation: 45t = 484

Now, let's find the time it takes for the ship with a speed of x km/h to meet the other ship: x = 484 / t (where t is the time taken by the ship with a speed of x km/h to meet the other ship)

We know that both ships meet after 4 hours, so we can substitute t = 4 into the equation: x = 484 / 4

Simplifying the equation: x = 121

Therefore, the speed of the other ship is 121 km/h.

Answer

The speed of the other ship is 121 km/h.