Question

Два автомобілі виїжджають одночасно назустріч один одному з двох міст, відстань між якими 456 км. Швидкість першого автомобіля 68км/год, а швидкість другого-16км/год більша. а) Яка відстань буде між автомобілями через 2 години після виїзду? . б)Через скільки годин вони зустрінуться?

Answer 1

1)   68+16=84(км/ч)-скорость второго авто
2)   2*(68+84)=304(км)-пройденное расстояние за 2 часа
3)   456-304=152(км)-расстояние между ними через 2 часа
4)  456:(68+84)=3(ч)-через такое время встретятся

а)  2*(68+68+16)=304(км) - через 2 часа

б)  456:(68+68+16)=3(ч)

Answer 2

Calculation of Distance between the Cars after 2 Hours

To calculate the distance between the cars after 2 hours, we need to determine how far each car will travel in that time.

The first car is traveling at a speed of 68 km/h. Therefore, in 2 hours, it will cover a distance of 68 km/h * 2 h = 136 km.

The second car is traveling at a speed that is 16 km/h faster than the first car. So its speed is 68 km/h + 16 km/h = 84 km/h. In 2 hours, it will cover a distance of 84 km/h * 2 h = 168 km.

The total distance between the cars after 2 hours can be calculated by subtracting the distance covered by the first car from the total distance between the cities:

456 km - (136 km + 168 km) = 152 km.

Therefore, the distance between the cars after 2 hours will be 152 km.

Calculation of Time of Meeting

To calculate the time when the cars will meet, we need to determine how long it will take for the two cars to cover the total distance between the cities.

The first car is traveling at a speed of 68 km/h, and the second car is traveling at a speed of 84 km/h. The combined speed of the two cars is 68 km/h + 84 km/h = 152 km/h.

To cover a distance of 456 km at a combined speed of 152 km/h, it will take:

456 km / 152 km/h = 3 hours.

Therefore, the two cars will meet after 3 hours.

Please let me know if there is anything else I can help you with!