Two people A and B set off from A and B at the same time and walk toward each other, and meet at point C after 5 hours. If A's speed remains the same, and B travels 4 kilometers more per hour, and A and B start from A and B at the same time and go toward each other, then the meeting point D is 10 kilometers away from point C; if the original speed ratio of A and B is 11 : 7, Q: What was A's original speed in kilometers per hour?
甲、乙二人分别从A、B两地同时出发相向而行，5小时后相遇在C点．如果甲速度不变，乙每小时多行4千米，且甲、乙还从A、B两地同时出发相向而行，则相遇点D距C点10千米；若甲乙原来速度比是11：7，问：甲原来的速度是每小时多少千米？
<gadget id="calculator">10 * 44</gadget>
<output>440</output>

<gadget id="calculator">5 * 7</gadget>
<output>35</output>

<gadget id="calculator">5 * 44</gadget>
<output>220</output>

<gadget id="calculator">10 * 7</gadget>
<output>70</output>

<gadget id="calculator">220 - 70 - 35 - 110</gadget>
<output>5</output>

<gadget id="calculator">35 + 5</gadget>
<output>40</output>

<gadget id="calculator">440 / 40</gadget>
<output>11</output>

<result>11</result>