Question

Расстояние между пристанями 150км. теплоход прошёл за 6 ч. на обратном пути его скорость увеличилась на 5км. ч. за какое время теплоход пройдёт весь путь туда и обратно?

Answer 1

1)150/6=25(км/ч)- первая скорость
2)25+5=30(км/ч)- при увеличение скорости
3)150/30=5(ч)- плыл обратно
4)6+5=за 11(часов)- проплывёт весь путь
Ответ:теплоход пройдёт весь путь за 11 часов

Answer 2

150:6=25 км/ч 25+5=30 ки/ч 150:30=5 ч. 6+5=11 ч. Ответ: за 11 часов.

Answer 3

Problem Analysis

We are given that the distance between two piers is 150 km. On the return trip, the speed of the boat increased by 5 km/h. We need to find the total time it takes for the boat to travel the entire distance there and back.

Solution

Let's break down the problem into smaller steps:

1. Calculate the time it takes for the boat to travel from one pier to the other at the initial speed. 2. Calculate the time it takes for the boat to travel from one pier to the other at the increased speed. 3. Calculate the total time for the round trip.

Step 1: Calculate the time for the initial trip

To calculate the time it takes for the boat to travel from one pier to the other at the initial speed, we can use the formula:

Time = Distance / Speed

Given that the distance is 150 km and the speed is unknown, we need to find the speed first. We are given that the boat took 6 hours to travel the distance on the return trip, so we can use this information to find the speed.

From source we can see that the boat traveled 60 km in 6 hours. Therefore, the speed of the boat on the return trip is:

Speed = Distance / Time = 60 km / 6 hours = 10 km/h

Now that we have the speed, we can calculate the time for the initial trip:

Time = Distance / Speed = 150 km / 10 km/h = 15 hours

Step 2: Calculate the time for the return trip

We are given that the speed of the boat increased by 5 km/h on the return trip. Therefore, the speed for the return trip is:

Speed = Initial Speed + Increase in Speed = 10 km/h + 5 km/h = 15 km/h

Using the same formula as before, we can calculate the time for the return trip:

Time = Distance / Speed = 150 km / 15 km/h = 10 hours

Step 3: Calculate the total time for the round trip

To calculate the total time for the round trip, we add the time for the initial trip and the time for the return trip:

Total Time = Time for Initial Trip + Time for Return Trip = 15 hours + 10 hours = 25 hours

Therefore, the boat will take 25 hours to travel the entire distance there and back.

Answer

The boat will take 25 hours to travel the entire distance there and back.