Question

Теплоход на 8 ч прошёл путь длиной 312 км. За сколько часов он пройдёт путь длиной 231 км, если его скорость уменьшится на 6 км/ч? ПОМОГИТЕ РЕШИТЬ УСЛОВИЕ И РЕШЕНИЕ ЗАДАЧИ ЗАРАНИЕ СПАСИБО!

Answer 1

Скорость до уменьшения:
V=S/t;V=312/8=39км/ч
Уменьшенная скорость:
39км/ч-6км/ч=33км/ч
t=S/V;t=231/33=7ч.

Answer 2

Problem Analysis

We are given that a ship traveled a distance of 312 km in 8 hours. We need to find out how long it will take for the ship to travel a distance of 231 km if its speed decreases by 6 km/h.

Solution

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

Let's calculate the original speed of the ship: - Distance = 312 km - Time = 8 hours - Speed = Distance / Time = 312 km / 8 hours = 39 km/h

Now, let's calculate the new speed of the ship after it decreases by 6 km/h: - New Speed = 39 km/h - 6 km/h = 33 km/h

Finally, we can calculate the time it will take for the ship to travel a distance of 231 km using the new speed: - Distance = 231 km - Speed = 33 km/h - Time = Distance / Speed = 231 km / 33 km/h = 7 hours

Therefore, it will take the ship 7 hours to travel a distance of 231 km with a decreased speed of 6 km/h.

Answer

The ship will take 7 hours to travel a distance of 231 km with a decreased speed of 6 km/h.