Question

Один поезд прошел 480 км а второй с той же скоростью - 360 км. второй поезд был в пути на 2 ч меньше чем первый. сколько часов прошел 2поезд?

Answer 1

1)480-360=120 км прошёл за два часа первый; 2)120:2=60 км/ч скорость поездов; 3)480:60=8 часов ехал первый поезд; 4)360:60=6 часов ехал второй поезд

Answer 2

Problem Analysis

We are given two trains, where one train travels a distance of 480 km and the other train travels the same distance at a speed of 360 km. The second train takes 2 hours less time than the first train to complete the journey. We need to find out how many hours the second train took to complete the journey.

Solution

Let's assume that the time taken by the first train to complete the journey is t hours. Since the distance traveled by the first train is 480 km and the speed is the same for both trains, we can use the formula distance = speed × time to calculate the time taken by the second train.

The time taken by the second train can be calculated as follows: 480 km = 360 km/h × (t - 2) hours

Simplifying the equation: 480 km = 360 km/h × t - 720 km

Adding 720 km to both sides of the equation: 480 km + 720 km = 360 km/h × t

Combining like terms: 1200 km = 360 km/h × t

Dividing both sides of the equation by 360 km/h: t = 1200 km / 360 km/h

Simplifying the equation: t = 3.33 hours

Therefore, the second train took approximately 3.33 hours to complete the journey.

Answer

The second train took approximately 3.33 hours to complete the journey.