As can be seen from the figure, Party A and Party B * * * have made four full trips, and each route is 2 kilometers more than Party B, so Party A is 8 kilometers more than Party B ... Because Party A has completed the whole journey of 1/k and Party B has completed the whole journey of (k- 1)/k, the whole journey is 8a/[(2 and/).

Give another practical example, the problem is roughly the same, you can refer to it.

Party A and Party B each set off from Party A to Party B by bike at the same time, and both returned immediately; A is faster. When he returned, he met B 4 kilometers away from B; When A returned to A, he immediately turned back to B and met B who came back from B at a distance of 1/3. Find the distance between a and b. (The whole journey refers to the distance between A and B)

Best answer

As can be seen from the figure, Party A and Party B * * * made the whole journey four times, each journey was 8 kilometers longer than Party B, so Party A walked 32 kilometers longer than Party B ... Because Party A walked more than two paragraphs of 1/3 and Party B walked more than two thirds of 1, the whole journey was 32/[(2 and1].