A and B start from ab at the same time, and continue to drive back and forth between ab. the speed ratio of a and B is 3:7, and the two vehicles meet for the first time in 2011 The point and the place where we met in 2012 are just 120 kilometers apart. How about the distance between the two places?

A and B start from ab at the same time, and continue to drive back and forth between ab. the speed ratio of a and B is 3:7, and the two vehicles meet for the first time in 2011 The point and the place where we met in 2012 are just 120 kilometers apart. How about the distance between the two places?

The encounter here does not include the situation of chasing after. The whole journey is 3 + 7 = 10. In 2011, Party A and Party B have a total of 2011 × 2-1 = 4021, the whole journey is 4021 △ 10 = 402... 1. The distance between the 2011 meeting point and a is from 1 to 2012, and Party A and Party B have a total of 2 whole journeys, in which Party A has 2 × 3 = 6, the distance between the meeting point and a is 1 + 6 =