Question

.(Расстояние от а до б =110 км. на весь путь из пункта а в пункт б автомобиль затратил 1 целую 2/3 часа,а на обратный путь на 10 минут больше. определите скорость автомобиля в каждом направлении)

Answer 1

1 2/3 часа=100мин
110/100=1,1 км/мин=66 км/час скорость туда
100+10=110 мин время обратно
110/110=1 км/мин=60 км/ч скорость обратно

Answer 2

Problem Analysis

We are given that the distance from point A to point B is 110 km. The car took 1 hour and 2/3 (or 5/3) hours to travel from point A to point B, and 10 minutes longer to travel back from point B to point A. We need to determine the speed of the car in each direction.

Solution

Let's assume the speed of the car from point A to point B is x km/h, and the speed of the car from point B to point A is y km/h.

To find the speed, we can use the formula: speed = distance / time.

From the given information, we can calculate the time taken to travel from point A to point B and from point B to point A.

The time taken from point A to point B is 1 hour and 2/3 hours, which is equal to 5/3 hours.

The time taken from point B to point A is 10 minutes longer than the time taken from point A to point B. Since 1 hour is equal to 60 minutes, 10 minutes is equal to 10/60 hours, which simplifies to 1/6 hours. Therefore, the time taken from point B to point A is 5/3 + 1/6 = 11/6 hours.

Now, we can calculate the speeds in each direction using the formula mentioned above.

The speed from point A to point B is given by: x = distance / time.

Substituting the values, we get: x = 110 / (5/3) = 66 km/h.

Similarly, the speed from point B to point A is given by: y = distance / time.

Substituting the values, we get: y = 110 / (11/6) = 60 km/h.

Therefore, the speed of the car from point A to point B is 66 km/h, and the speed of the car from point B to point A is 60 km/h.

Answer

The speed of the car from point A to point B is 66 km/h, and the speed of the car from point B to point A is 60 km/h.