A and B started from ab at the same time and went opposite each other. After 7 hours, they met and then drove at the same speed for 3 hours, At this time, car a is 240 kilometers away from land B, car B is 360 kilometers away from land a, and the distance between two places is?

A and B started from ab at the same time and went opposite each other. After 7 hours, they met and then drove at the same speed for 3 hours, At this time, car a is 240 kilometers away from land B, car B is 360 kilometers away from land a, and the distance between two places is?

After driving on for three hours
The two cars made a total of 1 / 7X (7 + 3) = 10 / 7 of the whole journey
The distance between two places of AB is (240 + 360) / (2-10 / 7) = 1050 km
A: AB is 1050 km apart
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The distance between a and B is 300 km. Two cars are running from two places at the same time. After four hours, they meet. The speed ratio is 7:8. What is the speed of the car?

The two cars travel together every hour
300 △ 4 = 75 (km)
What are the speeds of the two cars
7 out of 75 × (7 + 8) = 35 (km)
8 out of 75 × (7 + 8) = 40 (km)

The distance between the two places is 280 kilometers. A and B cars leave from the two places at the same time and meet in 4 hours. It is known that the speed ratio of a and B cars is 4:3. How many kilometers did the two cars travel when they met?

280 ÷ 4 = 70 (km), 70 × 43 + 4 × 4 = 160 (km); 70 × 33 + 4 × 4 = 120 (km); a: 160 km for car company a and 120 km for car company B

The distance between AB and ab is 560 km. A and B cars are running from AB and meet each other in 4 hours. It is known that the speed ratio of a and B cars is 4:3
The distance between AB and ab is 560 kilometers. A and B cars run from AB and meet each other in 4 hours. It is known that the speed ratio of a and B cars is 4:3. How many kilometers does this bus travel per hour?
No equations, I want detailed formulas

560 △ 4 = 140 km
140 × 4 / 7 = 80 km
140-80 = 60 km
The speed of car a is 80 km, and that of car B is 60 km