A and B leave from a and B at the same time. A is 54 meters per hour and B is 48 meters per hour. After meeting, they advance at the same speed and return to their destination. When they meet again, A is 21.6 meters more than B. how many meters are ab apart

A and B leave from a and B at the same time. A is 54 meters per hour and B is 48 meters per hour. After meeting, they advance at the same speed and return to their destination. When they meet again, A is 21.6 meters more than B. how many meters are ab apart

[54 + 48] × 1.2 = 122.4km when 21.6 △ 3 = 7.2m, 7.2 △ 54-48] = 1.2

Two cars a and B leave from a and B at the same time. After 5 hours, the two cars meet. After meeting, they continue to move forward at the same speed. After another 3 hours, the two cars meet
A and B leave from a and B at the same time. After 5 hours, the two cars meet. After meeting, they continue to move forward at the same speed. After another 3 hours, a car arrives at B. B is 120 kilometers away from A. how many kilometers are there between a and B?

A and B cars travel the whole journey every hour
1 △ 5 = 1 / 5
Three hours after the meeting, we had a full journey
1 / 5 × 3 = 3 / 5
The rest of the way
1-3 / 5 = 2 / 5
A. B distance between the two places
120 △ 2 / 5 = 300 (km)