Question

От двух пристаней расстояние между которыми 484 км одновременно навстречу друг другу отправились два катера.Они встретились через 4 часа после начала движения.Скорость одного катера 45км/ч.Определи скорость второго катера?

Answer 1

1)48*4=192. 2)484-192=292

3) 292:4=74
Ответ:скорость 2 катера 74км\ч

Answer 2

1)45•4=180(км 1 катер)
2)484-180=304(км 2 катер)
3)304:4=76(км/ч)
ответ:76 км /ч

Answer 3

Problem Analysis

We are given that two boats started simultaneously from two different ports and met each other after 4 hours. The distance between the ports is 484 km, and the speed of one boat is 45 km/h. We need to determine the speed of the second boat.

Solution

Let's assume the speed of the second boat is x km/h.

We can use the formula: Speed = Distance / Time to find the speed of the second boat.

The first boat traveled for 4 hours at a speed of 45 km/h, so the distance it covered is: Distance1 = Speed1 * Time = 45 km/h * 4 h = 180 km.

The second boat also traveled for 4 hours, so the distance it covered is: Distance2 = Speed2 * Time = x km/h * 4 h = 4x km.

Since the two boats met each other, the sum of the distances covered by both boats should be equal to the total distance between the ports:

Distance1 + Distance2 = Total Distance

Substituting the values we have:

180 km + 4x km = 484 km

Simplifying the equation:

4x km = 484 km - 180 km

4x km = 304 km

Dividing both sides by 4:

x km = 304 km / 4

x km = 76 km/h

Therefore, the speed of the second boat is 76 km/h.

Answer

The speed of the second boat is 76 km/h.