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, B travels 4 kilometers more per hour, and A and B start from A and B at the same time and go towards each other, then the meeting point D is 10 kilometers away from point C; if B's speed remains unchanged, A If they travel 3 kilometers per hour, and A and B start from both places A and B at the same time and walk towards each other, then the meeting point E is 5 kilometers away from point C. Question: 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；如果乙速度不变，甲每小时多行3千米，且甲、乙还从A、B两地同时出发相向而行，则相遇点E距C点5千米．问：甲原来的速度是每小时多少千米？
<gadget id="calculator">4 + 3</gadget>
<output>7</output>

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

<result>11</result>