Question

За 2 3/4 ч поезд прошёл расстояние 330 км. Какой путь он пройдёт за 7.5 ч, если будет идти с той же скоростью?

Answer 1

v=330/ (2 3/4ч)=330/ (11/4)=(330*4)/11=120 км/ч скорость

120*7,5=900 км

 

 

Answer 2

Переведем иррациональную дробь в десятичную для удобства: 2 3/4 ч=2,75 ч

Найдем скорость поезда по формуле: V=S/t=330/2,75=120 км/ч.

Вычислим пусть, который поезд пройдет за 7,5 ч по формуле: S=V*t=120*7.5=900 км.

Ответ: 900 км.

Answer 3

Calculating Distance Traveled

To calculate the distance the train will travel in 7.5 hours at the same speed it traveled 330 km in 2 3/4 hours, we can use the formula:

distance = speed × time

First, let's calculate the speed of the train using the information provided.

The train traveled 330 km in 2 3/4 hours. We can convert 2 3/4 hours to an improper fraction, which is 11/4 hours.

Now, we can calculate the speed of the train: - Speed = Distance / Time - Speed = 330 km / (11/4) hours - Speed = 330 km * (4/11) - Speed = 120 km/h

Now that we have the speed, we can calculate the distance the train will travel in 7.5 hours.

distance = speed × time distance = 120 km/h × 7.5 hours distance = 900 km

So, the train will travel a distance of 900 km in 7.5 hours at the same speed.