Teacher Wang’s home is 3.5 kilometers away from the school. After she rides the electric bike for 10 minutes, she is still 0.8 kilometers away from the school. How many kilometers does Teacher Wang ride per minute?
王老师家离学校3.5千米，她骑电动车10分钟后距离学校还有0.8千米，王老师每分骑多少千米？
<gadget id="calculator">3.5 - 0.8</gadget>
<output>2.7</output>

<gadget id="calculator">2.7 / 10</gadget>
<output>0.27</output>

<result>0.27</result>