Question

Решите задачу с пояснениями и наименованиями :Грузовая машина за 8 ч прошла 280 км , а легковая машина это же расстояние за 4 ч. Во сколько раз скорость грузовой машины меньше скорости легковой

Answer 1

280/8=35(км) за 1 час прошла грузовая,2)280/4=70км/ч)прошла легковая3)70/35=в 2 раза меньше!

Answer 2

Problem Analysis

We are given that a cargo truck traveled a distance of 280 km in 8 hours, while a passenger car traveled the same distance in 4 hours. We need to determine the ratio of the speed of the cargo truck to the speed of the passenger car.

Solution

To find the ratio of the speeds, we can divide the distance traveled by each vehicle by the time taken. Let's calculate the speeds of the cargo truck and the passenger car.

The speed of the cargo truck can be calculated as follows: Speed of cargo truck = Distance traveled by cargo truck / Time taken by cargo truck

The speed of the passenger car can be calculated as follows: Speed of passenger car = Distance traveled by passenger car / Time taken by passenger car

Let's substitute the given values into the formulas and calculate the speeds.

Calculation

Given: Distance traveled by cargo truck = 280 km Time taken by cargo truck = 8 hours Distance traveled by passenger car = 280 km Time taken by passenger car = 4 hours

Using the formulas mentioned above, we can calculate the speeds as follows:

Speed of cargo truck = 280 km / 8 hours = 35 km/h Speed of passenger car = 280 km / 4 hours = 70 km/h

Answer

The speed of the cargo truck is 35 km/h, and the speed of the passenger car is 70 km/h. To find the ratio of the speeds, we divide the speed of the cargo truck by the speed of the passenger car:

Ratio of the speed of the cargo truck to the speed of the passenger car = 35 km/h / 70 km/h = 1/2

Therefore, the speed of the cargo truck is half the speed of the passenger car.

Conclusion

The speed of the cargo truck is half the speed of the passenger car.