Question

теплоход за 8часов прошёл 312км. За сколько часов он пройдёт 231км,если его скорость уменьшить нат 6км/в час

Answer 1

 

12: 8=39 км/ч скорость пешехода

39-6=33 км/ч будет скорость пешехода

231:33=7 часов

Ответ: за 7 часов

Answer 2

312: 8=39 км/ч скорость пешехода

39-6=33 км/ч будет скорость пешехода

231:33=7 часов

Ответ: за 7 часов

Answer 3

Problem Analysis

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

Solution

To solve this problem, we can use the formula:

Time = Distance / Speed

Let's calculate the time it took for the ship to travel 312 km in 8 hours:

Time1 = 312 km / 8 hours

Now, we need to calculate the new speed of the ship after reducing it by 6 km/h:

New Speed = Old Speed - Reduction

New Speed = Old Speed - 6 km/h

Finally, we can calculate the time it will take for the ship to travel 231 km with the new speed:

Time2 = 231 km / New Speed

Let's substitute the given values and calculate the time:

Time1 = 312 km / 8 hours

New Speed = Old Speed - 6 km/h

Time2 = 231 km / New Speed

Calculation

Time1 = 312 km / 8 hours = 39 hours

New Speed = Old Speed - 6 km/h

Time2 = 231 km / New Speed

Answer

The ship will take 39 hours to travel a distance of 231 km if its speed is reduced by 6 km/h.

Please note that the calculations provided are based on the information given in the question.