Cars A and B leave opposite sides at the same time from cities A and B. Car A travels 60 kilometers per hour. After three hours, car A has passed the midpoint of 20 kilometers. At this time, car A and car B are still 8 miles apart. km. How many kilometers does car B travel per hour?
A、B两车同时从甲、乙两城相向开出，甲车每小时行60千米，经过三小时，甲车已驶过中点20千米，这时甲车与乙车还相距8千米．乙车每小时行多少千米？
<gadget id="calculator">60 * 3</gadget>
<output>180</output>

<gadget id="calculator">180 - 20</gadget>
<output>160</output>

<gadget id="calculator">160 * 2</gadget>
<output>320</output>

<gadget id="calculator">320 - 8</gadget>
<output>312</output>

<gadget id="calculator">312 / 3</gadget>
<output>104</output>

<gadget id="calculator">104 - 60</gadget>
<output>44</output>

<result>44</result>