Cars A and B respectively depart from two places 380 kilometers apart at the same time and meet each other in 3 hours. It is known that the speed ratio of car A to car B is 10:9. How many kilometers did car B drive when they met?
甲、乙两车分别同时从相距380千米的两地相对开出，3小时相遇．已知甲车与乙车速度的比是10：9．相遇时乙车行了多少千米？
<gadget id="calculator">10 + 9</gadget>
<output>19</output>

<gadget id="calculator">9 / 19</gadget>
<output>9/19 = around 0.473684</output>

<gadget id="calculator">380 * (9/19)</gadget>
<output>180</output>

<result>180</result>