Party A and Party B rode bicycles to each other from ab at the same time and met three hours later. When they met, Party A traveled 18 kilometers more than Party B. It is known that the speed ratio of Party A and Party B is 3:1 How many kilometers per hour does a travel? Don't do those / * ones 3:2

The title is incomplete. The speed ratio of a and B is 3:1
In three hours, a traveled 18 kilometers more than B,
Therefore, a has more lines per hour than B 18 △ 3 = 6 (km / h)
If the speed ratio of a and B is 3:2
6÷(3-2)×3=18
Then: a travels 18 kilometers per hour
If the speed ratio of a and B is 3:1
6÷(3-1)×3=9
Then: a travels 9 kilometers per hour

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