A and B drive from a to B at the same time. A's speed is three seventh faster than B's. three hours later, a's car arrives at B, and B's car is 72 kilometers away from B's. how many kilometers are the speeds of a and B's cars?

A and B drive from a to B at the same time. A's speed is three seventh faster than B's. three hours later, a's car arrives at B, and B's car is 72 kilometers away from B's. how many kilometers are the speeds of a and B's cars?

72÷3/7＝168
168÷3＝56
56×3/7＝24

The speed ratio of train a and B is 5:4. Train B starts first and goes from station B to station A. when it is 72 kilometers away from station B, train a starts from station a and goes to station B. the distance ratio of the place where the two trains meet is 3:4 from station a and station B. then how many kilometers is the distance between station a and station B?

The distance between a and B is 45 × (3 + 4) = 315 (km). A: the distance between a and B is 315 km

The speed ratio of train a and B is 5:4. Train B starts first and goes from station B to station A. when it is 72 kilometers away from station B, train a starts from station a and goes to station B. the distance ratio of the place where the two trains meet is 3:4 from station a and station B. then how many kilometers is the distance between station a and station B?

The distance between a and B is 45 × (3 + 4) = 315 (km). A: the distance between a and B is 315 km

The speed ratio of a and B trucks is 5:4. B trucks drive from B station to a station first. When they reach 72 km away from B station, a trucks start from a station and drive to B station
When they met, car B traveled 45 kilometers more than car a, so how many kilometers are there between station a and station B?

When car B arrives at the meeting point 72 kilometers away from station B, the distance he runs is 72 kilometers more than that of car a, which is reduced to 45 kilometers. That is to say, car a runs 72-45 = 27 kilometers more. According to the speed ratio of 5:4, the distance ratio is also 5:4, so car a runs 27x5 = 135 kilometers, and car B runs 27x4 = 108 kilometers. The distance required is 135 + 108 + 72 = 315 kilometers