A train travels 48 kilometers per hour from City A to City B and arrives at 12:00 noon; it travels 80 kilometers per hour and arrives at 10:00 am. How many kilometers per hour should the train travel if it arrives at 11:00 am?
一列火车从甲城开往乙城，每小时行48千米，中午12时到达；每小时行80千米，上午10时到达．如果要上午11时到达，这列火车行驶速度应是每小时多少千米？
<gadget id="calculator">80 * 10</gadget>
<output>800</output>

<gadget id="calculator">48 * 12</gadget>
<output>576</output>

<gadget id="calculator">800 - 576</gadget>
<output>224</output>

<gadget id="calculator">80 - 48</gadget>
<output>32</output>

<gadget id="calculator">224 / 32</gadget>
<output>7</output>

<gadget id="calculator">12 - 7</gadget>
<output>5</output>

<gadget id="calculator">11 - 7</gadget>
<output>4</output>

<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">48 * (5/4)</gadget>
<output>60</output>

<result>60</result>