The two passenger and freight cars start from the two cities of a and B at the same time and travel in opposite directions. After a period of time, the two cars meet at a distance of 30km from the midpoint of the whole journey. The speed ratio of the two passenger and freight cars It's 6:5. How many kilometers is the distance between the two cities The two passenger and freight cars start from the two cities of a and B at the same time and travel in opposite directions. After a period of time, the two cars meet at the midpoint of the whole journey. The speed ratio of the two passenger and freight cars is 6: how many kilometers are there between the two cities?

The two passenger and freight cars start from the two cities of a and B at the same time and travel in opposite directions. After a period of time, the two cars meet at a distance of 30km from the midpoint of the whole journey. The speed ratio of the two passenger and freight cars It's 6:5. How many kilometers is the distance between the two cities The two passenger and freight cars start from the two cities of a and B at the same time and travel in opposite directions. After a period of time, the two cars meet at the midpoint of the whole journey. The speed ratio of the two passenger and freight cars is 6: how many kilometers are there between the two cities?

（30 ×2）÷（6/11-5/11）
=60÷1/11
=660（km）
A: the distance between the two cities is 660km

In mathematics, car a and car B travel from two places 420 kilometers apart. After meeting for three hours, car B travels 10 kilometers less per hour than car a, and the speed of car a and car B is more
Car a and car B travel from two places 420 kilometers apart. After meeting for three hours, car B travels 10 kilometers less per hour than car A. what are the speeds of car a and car B?

Hello
The speed sum of the two vehicles is:
420 △ 3 = 140 (km)
B car per hour:
(140-10) △ 2 = 65 (km)
Car a runs every hour:
65 + 10 = 75 (km)

Party A and Party B set out from a and B at the same time. The starting speed is 3. After meeting party 2, Party A speeds up by 1 / 5 and Party B speeds up by 2 / 5. When Party A arrives at place B, Party B leaves place a
26 kilometers. How many kilometers are there between the two places?

When we meet,
3 / (3 + 2) = 3 / 5
B: 1-3 / 5 = 2 / 5
After meeting,
The speed ratio of a and B is 3 * (1 + 1 / 5): 2 * (1 + 2 / 5) = 9:7
A arrives at B and makes another 2 / 5 of the whole journey
B: 2 / 5 × 7 / 9 = 14 / 45
The distance between B and a is 3 / 5-14 / 45 = 13 / 45
Distance between the two places: 26 △ 13 / 45 = 90km

A and B start from a and B at the same time. The speed ratio of a and B is 3:2 when they start. After meeting, B increases the speed by 30%
B is 28 kilometers away from a, and a and B are thousands of meters apart?

When meeting, the distance ratio of Party A and Party B is 3:2, so the remaining distance ratio of Party A and Party B is 2:3. After speeding up, the speed ratio of Party A and Party B = (3 * 6 / 5): (2 * 13 / 10) = 18:13, and the time ratio for Party A and Party B to reach each other = (2 / 18): (3 / 13) = 13:27. So when Party A arrives, Party B only takes the remaining 13 / 27, that is, the whole journey [3 / 5 * (1-13 / 27)], which is 28