Question

Решите задачу по машина ехала по дороге 3ч со скоростью 70км/ч а зат ем выехала на шоссе увеличивается скорость на 10км/ч ехала еще 4ч сколько километров проехала машина за все время

Answer 1

70*3=210 ехала по дороге
10*4=40 по шоссе
210+40=250

Answer 2

3*70+(70+10)*4=210+320=530

Answer 3

Problem Analysis

We are given that a car traveled on a road for 3 hours at a speed of 70 km/h, and then it entered a highway where its speed increased by 10 km/h. The car continued to drive on the highway for 4 hours. We need to determine the total distance traveled by the car.

Solution

To find the total distance traveled by the car, we can calculate the distance traveled on the road and the distance traveled on the highway separately, and then add them together.

# Distance Traveled on the Road

The distance traveled on the road can be calculated by multiplying the speed of the car (70 km/h) by the time it traveled on the road (3 hours).

Distance on the road = Speed on the road × Time on the road

# Distance Traveled on the Highway

The distance traveled on the highway can be calculated by multiplying the speed of the car on the highway (70 km/h + 10 km/h = 80 km/h) by the time it traveled on the highway (4 hours).

Distance on the highway = Speed on the highway × Time on the highway

# Total Distance Traveled

To find the total distance traveled by the car, we add the distance traveled on the road and the distance traveled on the highway.

Total distance traveled = Distance on the road + Distance on the highway

Let's calculate the distances using the given information:

- Speed on the road: 70 km/h - Time on the road: 3 hours - Speed on the highway: 70 km/h + 10 km/h = 80 km/h - Time on the highway: 4 hours

Distance on the road: Distance on the road = 70 km/h × 3 hours = 210 km

Distance on the highway: Distance on the highway = 80 km/h × 4 hours = 320 km

Total distance traveled: Total distance traveled = 210 km + 320 km = 530 km

Therefore, the car traveled a total distance of 530 kilometers during the entire journey.

Answer

The car traveled a total distance of 530 kilometers during the entire journey.