Question

Теплоход за 8 часов прошол 312 км за сколько часов он пройдет 231 км если его скорость уменьшится на 6 км/ч решите задачу пожалуста

Answer 1

1) 312:8=39 (км/ч)2)39-6=33(км/ч)3)231:33=7(ч)

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 using the given information. The ship traveled a distance of 312 km in 8 hours, so the original speed is:

Original speed = distance / time = 312 km / 8 hours = 39 km/h. Now, we need to find the new time it will take for the ship to travel a distance of 231 km with a decreased speed of 6 km/h.

New speed = original speed - decrease in speed = 39 km/h - 6 km/h = 33 km/h.

Using the formula, we can calculate the new time:

New time = distance / new 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.

Please let me know if you need any further clarification.