A bus starts at 12:00 noon and arrives at Kunming at 3:00 pm, with a total length of 150 kilometers. Average miles per hour?
一辆客车从中午12：00出发，到下午3：00到昆明，全长150千米．平均每小时行多少千米？
<gadget id="calculator">150 / 3</gadget>
<output>50</output>

<result>50</result>