The distance between A and B is 480 kilometers. Cars A and B start from A and B respectively, drive towards each other, and meet each other in 2 hours and 30 minutes. It is known that the speed of car A is 80 kilometers per hour, how many kilometers per hour is the speed of car B?
A，B两地相距480千米，甲乙两车分别从A，B两地出发，相向而行，2小时30分相遇．已知甲车速度是每小时80千米，乙车速度每小时多少千米？
<gadget id="calculator">2.5 * 80</gadget>
<output>200</output>

<gadget id="calculator">480 - 200</gadget>
<output>280</output>

<gadget id="calculator">280 / 2.5</gadget>
<output>112</output>

<result>112</result>