Question

Один автомобіль проїхав 20 км за 20 хв, а другий проїхав цю саму відстань за 10 хв. Швидкість якого автомобіля більша і в скільки разів?

Answer 1

Другий , швидкість 120 км/год

Answer 2

Calculating the Speed of the Cars

To compare the speeds of the two cars, we can calculate their respective speeds using the formula:

Speed = Distance / Time

For the first car: - Distance = 20 km - Time = 20 minutes (or 20/60 = 1/3 hours)

For the second car: - Distance = 20 km - Time = 10 minutes (or 10/60 = 1/6 hours)

Let's calculate the speeds of the two cars.

Speed Calculation

The speed of the first car: - Speed = 20 km / (1/3) hours - Speed = 20 km * (3/1) hours - Speed = 60 km/h

The speed of the second car: - Speed = 20 km / (1/6) hours - Speed = 20 km * (6/1) hours - Speed = 120 km/h

Comparing the Speeds The speed of the second car (120 km/h) is twice the speed of the first car (60 km/h).

This calculation shows that the speed of the second car is twice the speed of the first car.