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The answers to the daily thinking exercises of the sixth grade in the Primary School Mathematics JournalNo. 1 155.
When we first met, Car Dealer A walked 2/5 of the whole journey and Car Dealer B walked 3/5 of the whole journey.

Therefore, the speed ratio of the two cars is A: B = 2: 3.

When we first met, the sum of the distances between A car and B car and the distance between AB cars.

When we met for the second time, the sum of the distances between the two cars was the distance between AB * 3.

Because the speed ratio of Party A and Party B is 2: 3, when we meet for the second time, the distance traveled by Party B is = (the distance between them =(AB *3) * 3/5.

Distance between the second meeting place and place A: (AB distance *3) * 3/5-AB distance =AB distance *4/5.

So the distance between AB and AB is *4/5=80.

AB distance between the two places = 100