It takes 8 hours for A to travel alone, and 6 hours for B to travel alone. After they start at the same time for 3 hours, A travels 20 kilometers less than B. How many kilometers are there in total?
一段路，甲单独行完要8小时，乙单独行完要6小时，他们同时出发3小时后，甲比乙少行20千米，这段路共有多少千米？
<result>180</result>