The distance between A and B is 300 kilometers. Cars A and B start from the two places at the same time and drive toward each other. It is known that car A travels 65 kilometers per hour. After 2.5 hours, the two cars meet. How many kilometers does car B travel per hour? ?
甲乙两地相距300千米，甲、乙两车同时从两地出发，相向而行，已知甲车每小时行65千米，2.5小时后两车相遇，求乙车每小时行多少千米？
<gadget id="calculator">300 / 2.5</gadget>
<output>120</output>

<gadget id="calculator">120 - 65</gadget>
<output>55</output>

<result>55</result>