Cars A and B are driving in the same direction at the same time. After 2 hours, car A is 10 kilometers ahead of car B. If the two cars are driving in the opposite direction at the same time and the distance is 225 kilometers after 3 hours, then car A will How many kilometers per hour.
甲、乙两车同时同地同向而行，2小时后甲车在乙车前方10千米处，如果两车同时同地反向而行，3小时后相距225千米，则甲车每小时行多少千米．
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<gadget id="calculator">225 - 15</gadget>
<output>210</output>

<gadget id="calculator">3 + 3</gadget>
<output>6</output>

<gadget id="calculator">210 / 6</gadget>
<output>35</output>

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

<result>40</result>