A. B is 1000 meters apart. A and B set out from a and B at the same time and walk back and forth between a and B. if the first meeting is 100 meters away from the midpoint of a and B, how far is the second meeting place from the first meeting place?

A. B is 1000 meters apart. A and B set out from a and B at the same time and walk back and forth between a and B. if the first meeting is 100 meters away from the midpoint of a and B, how far is the second meeting place from the first meeting place?

The first time: Party A and Party B walk a full distance of 1000 meters. Suppose that Party A walks 1000 ／ 2-100 = 400 meters. The second time: Party A and Party B walk three full distances, in which Party A walks 400 × 3 = 1200 meters. At this time, the distance from a 1000 - (1200-1000) = 800 meters. The distance from the first meeting point: 800-400 = 400 meters. A: the second meeting place is 400 meters away from the first meeting place

A and B set out at the same time from a and B, which are 900 meters apart. A travels 200 meters per minute and B 250 meters per minute. After how many minutes, they are 2700 meters apart? (work out a variety of situations)

① When two people walk opposite each other for (2700-900) km, the time taken is (2700-900) / (200 + 250) = 4 points. (2) when two people walk opposite each other for (2700 + 900) km, the time taken is (2700 + 900) / (200 + 250) = 8 minutes. (3) a and B are in the same direction, a